Diamond's Edge Wedding & Events

Oceanfront Weddings & Events

Holds ceremonies and receptions

5.0

Praised by couples for:

Amenities

Quality catering

Guests comfort

We had an amazing experience with our wedding venue and couldn’t have asked for a better weekend! Everything was clean, organized, and ran so smoothly from start to finish. We stayed at the hotel for the entire weekend, enjoyed lunch by the pool, and were able to truly relax and enjoy the experience with our family and friends. Colleen, our coordinator, and Alexis, her assistant, were absolutely wonderful. They made the entire wedding day feel easy and stress-free, and they did an incredible job bringing all of our wishes to life. It meant so much to be able to enjoy our day without worrying about the little details because we knew everything was being taken care of. We’re so grateful to Colleen, Alexis, and the entire team for helping make our wedding so special. From the overall experience to the day itself, everything exceeded our expectations. We would absolutely recommend this venue to any couple looking for a beautiful, seamless, and memorable wedding experience!

Shelby L.

5.0

If you’re considering The Inn at Diamond Cove as your wedding venue — book it. We had a 200+ person wedding with a lot of moving pieces, detailed logistics, transportation planning, and a full weekend of events — and the team at Diamond Cove absolutely delivered from start to finish. From the very beginning, they were professional, responsive, and truly invested in making sure everything went smoothly. We weren’t planning a simple “show up and get married” day — our wedding involved a ton of coordination, and their willingness to work with us on the details made a massive difference in our overall experience. We did a full buyout of the inn, and it was hands-down one of the best decisions we made for our wedding weekend. It gave the entire event a private, elevated feel — like we had our own little world for the weekend. Having our friends and family staying on-site created such a fun, connected atmosphere and made everything easier: *Guests didn’t need to worry about commuting *People could relax and stay in “wedding mode” *The entire experience felt seamless and special We also hosted our afterparty at the inn, and it was honestly the perfect ending to the night. It was fun, effortless, and convenient — and we loved being able to keep the celebration going without needing to move everyone to another location. It felt like the venue was designed for exactly this kind of wedding experience: a big celebration, done beautifully, without unnecessary hassle. If you’re planning a wedding that’s large, detailed, or logistically complex, you want a venue that can truly execute — and The Inn at Diamond Cove absolutely can. We are so grateful we chose them and would recommend them a thousand times over.

Mallory N.

5.0

About Diamond’s Edge Restaurant & Marina is a waterfront wedding venue located on Great Diamond Island in Portland, Maine. Set within historic Fort McKinley and surrounded by sweeping water views, lush forests, and quiet island charm, this coastal destination offers couples a one-of-a-kind setting for their celebration. Accessible by a short ferry ride from Portland, it feels like a private retreat—perfect for couples dreaming of a scenic and serene Maine wedding. The venue is open for events from late May through early October. Unique Wedding Weekend Experience What makes Diamond’s Edge truly special is the ability to turn your celebration into a full wedding weekend getaway. With an exclusive buyout of the nearby Inn at Diamond Cove, you and your guests can stay on the island together and enjoy it as your own private escape. Spend the weekend exploring the historic grounds, relaxing by the pool, kayaking in Diamond Cove, hosting welcome parties, rehearsal dinners, farewell brunches, and more. It’s a destination wedding—without leaving Maine. Facilities & Capacity Diamond’s Edge offers several beautiful spaces to suit celebrations of all sizes: Oceanview Lawn: A stunning waterfront location perfect for ceremonies and outdoor receptions, accommodating up to 250 guests. Custom Sperry Tent: Featuring retractable sides and a built-in dance floor, this tent allows for an elegant outdoor event in any weather. Art Gallery: Ideal for intimate weddings and gatherings of up to 70 guests, with 40-foot vaulted ceilings and sliding barn doors that bring rustic charm to your celebration. Couples may also choose to end the night with a private boat cruise back to Portland or stay steps away at the Inn at Diamond Cove. Services Offered Diamond’s Edge Restaurant & Marina is a full-service wedding venue providing: Dedicated wedding specialist On-site catering with coastal-inspired menus Full bar service Champagne toast Coffee and dessert service Stay on Island at the Inn at Diamond Cove Just steps from Diamond’s Edge, the Inn at Diamond Cove allows couples to turn their wedding into a full island getaway. Choose a full Inn buyout for exclusive access all weekend long, or reserve a select number of guest rooms for those wishing to stay on island. With amenities including a pool, beaches, kayaking, tennis courts, and historic walking paths, couples and guests can relax, reconnect, and celebrate together in a truly unforgettable setting. It’s a destination wedding experience—without leaving Maine.

18+ years in business

Speaks English

Small team (2-10 members)

Amenities + details

Amenities

Ceremony Area

Covered Outdoors Space

Indoor Event Space

Outdoor Event Space

Reception Area

Ceremony Types

Civil Union

Commitment Ceremony

Elopement

Interfaith Ceremony

Non-Religious Ceremony

Religious Ceremony

Second Wedding

Vow Renewal Ceremony

Settings

Beach

Waterfront

Restaurant

Tented

Venue Service Offerings

Bar & Drinks

Food & Catering

Planning

Rentals & Equipment

Service Staff

Any questions?

Meet the team

Colleen O'Connell

Event Manager

With almost a decade of experience in the events industry and 5 years spent planning weddings on our island, I’m passionate about turning love stories into beautifully seamless celebrations. I adore working closely with couples, getting to know their vision, and making the planning process as joyful and stress-free as possible. I love love — and I’m so honored to celebrate it every day

5.0

out of 5.0

12 reviews

Your trust is our goal. Our community relies on honest reviews to help you make those big decisions with ease.

Review Summary

This AI-generated summary is a snapshot of this vendor's ratings and feedback.

This island venue offers a beautiful, memorable setting and is ideal for full-weekend buyouts. Staff were consistently praised as professional, organized, and attentive, handling logistics, shuttles, and details to make the day run smoothly. Catering and cocktails received high marks and many couples highly recommend it for large or complex weddings.

Search reviews

Shelby L

Highlighted review.

We had an amazing experience with our wedding venue and couldn’t have asked for a better weekend! Everything was clean, organized, and ran so smoothly from start to finish. We stay...

ed at the hotel for the entire weekend, enjoyed lunch by the pool, and were able to truly relax and enjoy the experience with our family and friends. Colleen, our coordinator, and Alexis, her assistant, were absolutely wonderful. They made the entire wedding day feel easy and stress-free, and they did an incredible job bringing all of our wishes to life. It meant so much to be able to enjoy our day without worrying about the little details because we knew everything was being taken care of. We’re so grateful to Colleen, Alexis, and the entire team for helping make our wedding so special. From the overall experience to the day itself, everything exceeded our expectations. We would absolutely recommend this venue to any couple looking for a beautiful, seamless, and memorable wedding experience!

Response from Diamond's Edge Wedding & Events

What a wonderful review! Thank you for choosing to celebrate such a special weekend with u...

s! We love hearing that you and your guests were able to relax, enjoy the island, and soak in every moment. Our entire team loved being part of your celebration, and we're so grateful we could help bring your dream wedding to life! Cheers to a lifetime of happiness! 💕

Mallory N

If you’re considering The Inn at Diamond Cove as your wedding venue — book it. We had a 200+ person wedding with a lot of moving pieces, detailed logistics, transportation planning...

, and a full weekend of events — and the team at Diamond Cove absolutely delivered from start to finish. From the very beginning, they were professional, responsive, and truly invested in making sure everything went smoothly. We weren’t planning a simple “show up and get married” day — our wedding involved a ton of coordination, and their willingness to work with us on the details made a massive difference in our overall experience. We did a full buyout of the inn, and it was hands-down one of the best decisions we made for our wedding weekend. It gave the entire event a private, elevated feel — like we had our own little world for the weekend. Having our friends and family staying on-site created such a fun, connected atmosphere and made everything easier: *Guests didn’t need to worry about commuting *People could relax and stay in “wedding mode” *The entire experience felt seamless and special We also hosted our afterparty at the inn, and it was honestly the perfect ending to the night. It was fun, effortless, and convenient — and we loved being able to keep the celebration going without needing to move everyone to another location. It felt like the venue was designed for exactly this kind of wedding experience: a big celebration, done beautifully, without unnecessary hassle. If you’re planning a wedding that’s large, detailed, or logistically complex, you want a venue that can truly execute — and The Inn at Diamond Cove absolutely can. We are so grateful we chose them and would recommend them a thousand times over.

Response from Diamond's Edge Wedding & Events

Thank you so much for your incredibly kind words — it was truly an honor to host your wedd...

ing weekend at Diamond Cove. Your full inn buyout created such a special, private atmosphere, and we loved seeing your guests fully relax and celebrate all weekend long. From logistics to the afterparty, we’re so grateful for the trust you placed in us to bring everything together seamlessly. Wishing you both a lifetime of happiness — we’re so honored to have been part of it!

Any questions?

Claire M

Our experience with Colleen and the rest of the team at Diamond’s Edge / Inn at Diamond Cove was so wonderful from start to finish! Months later, guests are still telling us how sp...

ecial and unique the whole experience of attending a wedding on an island felt and the team at the venue was such a huge part of that! The inn was the perfect place to get ready, so calm, beautiful, and such a lovely environment for the bridal party as a way to set the tone for the day! The team was incredibly helpful with logistics on the day of, including shuttling us to and from the dock and wedding tent, which made the day feel smooth and stress-free. In the months and weeks leading up to the wedding, the team was so supportive in helping us coordinate details and bring items over to the island as out-of-towners! They answered all of our many questions about the logistics of having a wedding on an island and hosted a lovely tasting with our families at the Portland Harbor during the planning process! On rehearsal day and wedding day, Colleen and her team ran everything efficiently and seamlessly! The food and signature cocktails were excellent, and we felt so taken care of, as did our guests! Great Diamond Island is such a special place, and this team does an incredible job of creating an experience that feels just as magical as the island itself!

Tori

We had our Fall 2025 wedding on Great Diamond Island and the day could not have been more perfect! Not only is the setting breathtaking, Colleen and Amber-- who was there from rehe...

arsal through last call on wedding night!-- were truly a dream team to work with. They answered our many questions and made the planning process a breeze. They both anticipated our needs-- we had a draft timeline in our inbox before I could fully wrap my head around making one-- accommodated our preferences (like making sure the bar had our favorite beer from a Maine brewery), and had a sharp eye for detail that made everything look beautiful, run smoothly, and taste delicious. When plans or timing shifted, Amber was cool as a cucumber and kept things moving along (at the last minute we decided to greet our guests coming off the ferry at the dock and Amber was right behind us with a golf cart to bring us back up to the ceremony site) without ever rushing us and emphasizing that she was there to facilitate the magic. We've heard repeatedly from our guests that it was one of the most beautiful weddings they've been to and we could not be happier with how our day turned out. Truly, our day was as beautiful as it was thanks to Amber, Colleen, and the entire Diamond's Edge team.

Maria P

Choosing Great Diamond Island for our wedding was the best choice we could've made!! Colleen and her team were so wonderful, communicative, and helpful from the first time we reach...

ed out. They answered all of our (many many) questions quickly, were extremely flexible in ensuring all the details fit our wants and needs, and overall made planning feel low-stress and so exciting. From the tasting weekend to the wedding weekend, we felt so welcome and taken care of. The Inn, restaurant, and wedding staff truly helped us make it our dream day and provided an absolutely incredible experience for our guests.

Response from Diamond's Edge Wedding & Events

Thank you so much for this incredible review! It was truly a joy to celebrate your wedding...

weekend on Great Diamond Island. Our team loved helping bring your vision to life and making the planning process feel easy and exciting. We’re so grateful you chose the island for such a special moment, and we’re thrilled to hear your guests had an amazing experience as well. Wishing you both a lifetime of happiness!

Alex V

The Inn at Diamond Cove is truly a one-of-a-kind place to have a wedding. My wife and I toured many venues in the Portland area but fell in love immediately when we arrived at the ...

wedding grounds on Diamond Island. The Island is perfectly quaint and on the quieter side. The outdoor venue has a beautiful view overlooking the water, showing off a quintessential Maine skyline. Colleen and Hannah were so incredibly helpful and very organized leading up to our big day. As for the day-of, Colleen and Hannah have everything nailed down to a science so you can rest assured everything will go well in their hands. The ceremony site was beautiful. The tent, decorations, table settings, and lighting were also impeccably done. The catering staff nailed their queues and delivered some delicious steaks and fresh fish in a lobster sauce (yum!) without any delays. Overall, we had a lovely time working with the folks at Diamond Cove and would happily recommend it to others.

Rebecca D

My now husband and I got married here 9/9/2023 and could not have asked for a better wedding experience. Colleen, the day-of coordinator through the venue, made sure everything wen...

t absolutely seamlessly. You will truly be in great hands. All staff that we encountered were so dedicated to making sure we felt like their #1 priority the entire weekend. From the minute we arrived on the island, we carried nothing and wanted for nothing! Last but certainly not least, you cannot ask for a more beautiful Maine venue. As 2 Mainers ourselves, it was important to us that our venue showed off the outdoor beauty Maine has to offer. So many of our guests told us it was the most memorable and beautiful wedding venue they'd ever seen. I cannot recommend enough using Diamond's Edge Restaurant & Marina for your big day! We can't wait to return for dinner and weekend stays every year.

Natasha S

As a born and raised Mainer, I knew I wanted to get married by the ocean. After doing our research and touring multiple venues along the coast, we knew Diamond's Edge was the perfe...

ct choice for us. Set in Maine's beautiful Casco Bay, the venue allowed us to show our guests just how stunning our state can be. Most of our guests travelled in for the big day and it was fun having them get the authentic ferry experience! Along with the idyllic backdrop and facilities, Diamond's Edge provided unparalleled service. Colleen and Greg (and so many others!) went above and beyond for our wedding weekend. I cannot stress enough how helpful, kind, and understanding they were from the initial planning stage through seeing us off after the wedding. Before the weekend, I had my worries about transportation to the island (guests, vendors, decorations, etc.), set up and clean up; however, Colleen was exceptional and incredibly organized throughout the process. Their team runs like a well-oiled machine. Also, THE FOOD. We have gotten numerous comments about how delicious the appetizers and entrees were! Shout out to the mini lobster rolls, beef wellington bites, ahi tuna spoons, and the beef tenderloin. Everything we ate went beyond our expectations. In conclusion, Diamond's Edge is a fantastic venue. One that we will continue to visit for our anniversary every year. We are so thankful to everyone that helped make our best day possible.

Rebecca M

The location is absolutely amazing for a wedding. The food was delicious, and the team (especially Colleen) did a fantastic job. Definitely recommend!

Brycelyn W

We had an amazing wedding experience and it would not have been possible without our amazing venue! The staff goes above and beyond as soon as you book with them, and our family is...

still raving about how kind and accommodating they were during our wedding weekend. It was so convenient to have our ceremony space and reception area next to each other, and our getting ready rooms just a short golf cart ride away. We hosted our rehearsal dinner with them, and the food was top notch for that and for our wedding reception. Having a built in day-of coordinator through the venue was so great, and kept everything running smoothly with vendor coordination and timeline. Not to mention, the backdrop for pictures cannot be beat with the ocean at your feet. I grew up coming to Great Diamond Island during the summers, and I have a whole new appreciation for it now. The island is absolutely magical. I highly recommend booking with them, you will not regret it.

Linda J

Our daughter's wedding just took place in this wonderful spot. The location is beautiful, and guests who were not from Maine loved the ferry ride to the Island and back. The food...

was delicious. The staff and the coordinator, Colleen, went the extra mile to accomodate all our needs.

Kathryn J

Amazing day, amazing location, amazing staff! Cannot think of a single thing that went wrong during the big day (definitely were incidents but the venue coordinator and staff had i...

t taken care of before I could have ever noticed!) beautiful location, delightful food!!

Service area & Contact info

468 Fore Street, Portland, ME

Open map

(207) 523-2050

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Diamond's Edge Wedding & Events

About this venue

Review Summary

Service area & Contact info

Wedding vendors in Portland

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