I've been to the beach but not Disney the past several years in Feb and the weather varies. Average tends to be in the seventies and sunny most of the time. It's kind of a lottery on if you will get any days in the 80s, whether you go at the beginning of Feb or the end. For the most part as an adult I would slosh through the ocean up to my ankles and that's about it- water too cold. Now there were always kids in the water (unless it was a red tide year). How that relates to pools, I'm not sure. The pool at my mom's place was heated-- but there were no giant slides or hidden mickeys so my mom couldn't figure out why I wasn't interested in swimming
LOL