http://www.sailcaribe.com/ You will likely be sailing to their marina if you are coming from another operator anywhere in the Carribean. A power yacht from http://virginmotoryachts.com/travel/bvi/ on Tortola would also give you many options. The cleanest least hassle and doubt would be to do the wedding then leave to do a charter without the complexities of of trying to mix the two with a boat, distances, and more. Villa Montana Beach Resort is on the opposite end of the island that you would likely use a charter boat. We have made use of large charter boats for wedding parties at both Little Dix and Caneel Bay. We put the boat in those anchorages with some of the younger crowd bunking and partying all night on the boat with day trips for others in the party not into hotel lizard sitting. Villa Montana Beach Resort is fully exposed and on the wrong end of the Puerto Rico.