Will be sailing to Tortola and St. Thomas soon. Question: do we need to take our passports with us, I am assuming so. Next, for all you folks that have done excursions, how do you carry your passports and ship card? I am not comfortable taking my billfold, besides the passport won't fit in it anyway! Next question: We are doing a snorkeling excursion (through Disney) off a boat. How do you stow your valuables when in the water? Sorry if these are dumb questions.