We are a group of 8 doing the Eastern in April and would like to do a snorkeling excursion in Tortola. There are 4 adults and 4 kids age 11-15. I have looked at some of the private boat tours, but would prefer to stick with Disney. There are the following excursions available for early morning: TT63 (Tortola sail and snorkel, TT44 (Treasure island swim and snorkel, and TT21 (Virgin islands sail, snorkel, and beach adventure. Anyone have reviews on any of these specific excursions?