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If you go with Captain Marvins, try to "Ham it Up" as much as possible. This will get you more video time on the DVD. Because my kids were chasing fish, doing summersaults in the water, letting Eric put the stingrays on their heads, holding the stingrays etc... We definetly took up most of the DVD. It was a great momento of the trip. Your kids will talk about it for a long time!