Admission to the park is free the day after the wedding (August 4). If you want to go more times than once, you can buy a 7-day pass online at https://www.nps.gov/acad/planyourvisit/fees.htm
You'll need an Acadia pass to get to this restaurant! (It's in the national park) But worth the trip for their famous popovers!
The best lobster in Bar Harbor, hands down!