First...Crocs are not rubber. They are a special antibacterial resin that molds to you foot. I have been wearing mine non-stop, as has my dd and dh, to be sure they will be okay in WDW. Have to say that here in NE, the weather has been very Orlando like...steamy!! No problems footwise. So, mine are going with me. As are my Lands End sport sandals...these are wonderful in the wet and terrific when it isn't, and my sneakers. All three of us will have that asst. of footwear with us.
Now, as to sneaker drying...we found that if you stuff them with newspaper they dry out much faster. We went on a trail ride and got caught in a torrential downpour 2 yrs. ago!! Our feet were soaked before we even got off the horses. So, by the time we got back to the Polynesian...well, there wasn't a dry spot in 'em. We left them to dry a bit that afternoon, in the room. Then that night we stuffed them with newspaper. They were almost dry in the morning!!