Room Block Link:
https://www.marriott.com/event-reservations/reservation-link.mi?id=1737041973992&key=GRP&guestreslink2=true&app=resvlink
There will be a bus picking guests up at the hotel and taking them back after the wedding.
Denver International Airport is where you will want to fly into/out of. It's about a 40 minute drive to the hotel from the airport. You can uber/lyft or rent a car. If you plan to explore the area or the state I would recommend renting a car!
If you are looking for more affordable hotel options below are options that are within walking distance from the Renaissance Hotel.
1. TownePlace Suites Boulder Broomfield/Interlocken $110ish
2. Hilton Garden Inn Broomfield Boulder $170ish