With all the resort pools being heated, its not the pool water that cool. I'm from the north, Ohio and its the getting out and back to your room that gives me the goose bumps. Plus when WDW is in the high 60's, low 70's, down there its like the 80's to me. Must be the humidity makes disneys temps feel warmer. Stick one in the luggage or better yet, 2, I really hate to put on a wet one when its cool outside and the walk to the pools is sometimes long. You'll be swimming either way, its Florida!!