You don't need to bring anything with you expect your driver's license, credit card and ticket confirmation. They supply the snorkeling gear, towels, food, drinks, beer, sunscreen (but I used my own-I didn't like theirs). You don't really need a camera because you aren't allowed to take pictures with your dolphin swim and there really isn't much else to take pictures of. The earliest you can arrive is 8 and the earlier you get there the earlier the dolphin swim. We got there at 8:30 and got a dolphin swim for 9:45