When looking for a yacht to rent in San Diego for your friend's bachelor party, it's best to rent it ahead of time. Parties on yachts are quite popular in San Diego, and the charters get booked up fast. If you try to book a yacht at the last minute, you might not be able to find one with all the amenities you need and that can host all your guests. Worst case scenario: You won't find an available yacht to book the same day at all.