At "The Boatyard" in Barbados, I see where they offer snorkeling. Is that a part of a cruise leaving from there, or is there snorkeling within the compound? Tell me more about this place. I'm going to have 4 teen aged girls with me. Thought about a "wreck snorkeling/swim with sea turtles" cruise, but thought the teen agers might enjoy all the activities at a place like this. Going on Destiny - June 13