OK...i'm leaving in 2WEEKS!!!!!AHHHHHH for our first cruise ever. Now, I have been all over the Caribbean (just not via a cruise) and have never ever heard the need for this product, but have gotten wind of the sea lice (does not sound fun) present at CC. We are dying to spend the day in the water there and snorkel like crazy people. I need to order the sea safe pronto if we are going to take it with, but is it really necessary? I would prefer to just order it and use it. My husband said anyone could sell me anything and this is the dumbest thing he's ever heard. HELP!!