We're having a destination wedding on the SW Coast of FL on a small island around new years. After the wedding, we'd like to enjoy some time alone which we won't really be able to do if we stay on the island as most of our guests are making a vacation out of the wedding. We'd like to go somewhere warm, fun and adult-centric, if possible, for 3-4 days after the wedding. We're thinking of going to maybe the Bahamas or Puerto Rico. Somewhere that the flight would be short, and that we can enjoy for 3-4 days and not feel like we missed out. Any thoughts or tips?