We will be at WDW for five days starting May 22 and I have one son who is susceptible to problems with the heat, such as dehydration and passing out. I would like to bring one of those little battery operated fans that you fill with water and the fan is like a mister to cool you off but I'm worried about being able to store it somewhere when we go on rides. I'm sure some of the coasters must have cubbies or lockers for storage, but how would I find out which rides have storage available and, if not, what could I do? If anyone has been to any of the parks recently and can offer suggestions, it would be great. Thanks.