Has anyone done the DCL "island tour and snorkel" excursion? This is the one that takes you to some historical places, Hell, and then snorkeling at Stingray City. Takes a grand total of 3.5 hours. If you've gone, how many people were on the tour with you? How long did you get to snorkel for? We really want to snorkel, but I would also like to go to Hell and send some postcards and take photos. Am kind of feeling like we're squeezed for time if I want to walk through a shop or two before heading back to the ship. Any suggestions?