I do NOT believe you get fins. We got snorkeling VESTS, MASK and SNORKEL. All cleaned and included in the price of admission. I believe minimum age is 10 although my daughter did it at age 9, so it depends on how old they look.
Absolutely go first thing. It is beautiful and takes wonderful underwater photos. We usually go back through several times and then done for the day. As the tank gets crowded it is less enjoyable people wise and the sediment is stirred up making it "not as pretty". The fish stay at the bottom and you are to stay at the top. NO touching. Some fish and sting rays will swim up near you, but not the sharks. They enjoy the bottom.
When you get your quick lesson, make sure you test the snorkel/mask before you take off. They do get used alot, and we have gotten a snorkel for my son that leaked. Lots of choking was happening.
The young and those not quite up for it can go down in the "sunken tanker" and view it all through portholes.
The water is cold and we always see people who panic between the cold, the snorkel sensation, lack of swim skills and the fish. The water is deep, I'd guess well over 8ft deep. There is a giant rock in the middle they will allow you to squat on (not stand) to take a brief rest.
Keep the peace, float slowly and enjoy the ride
