If you're planning on coming with a group of people, sharing a rental home can be one of the most budget-friendly and authentic ways to stay. Rental houses are typically booked by the week, but you may be able to secure a shorter stay using AirBnB or VRBO. https://www.mvvacationrentals.com/ and https://www.weneedavacation.com/ have beautiful week-long rentals available. We recommend searching for rentals in the town of Oak Bluffs, for ease of getting to the wedding.
If a hotel is more your style, there are plenty of options! We recommend a hotel in Oak Bluffs, for ease of transportation to/from the venue. https://www.summercamphotel.com/ is located in the heart of Oak Bluffs, just off the harbor. https://www.vacasa.com/usa/The-Island-Inn-MA?partnerid=87 is another lovely Oak Bluffs option.