Well here in the wild suburbs of Philadelphia, a disposable underwater camera is not be found.. ( I guess no one wants us to see what is really in the Delaware and Shulykill River--never mind the Atlantic Ocean) I am assuming that these type of cameras are readily available in Florida. Where exactly do I buy them? Is that something a WalMart/Target/grocery store sell? Or do I need to purchase them at a photography store? I would love to be armed and ready when we arrive at Discovery Cove... Thanks so much!!