While at WDW, we DO NOT wear socks with our Crocs. There is not much worse in WDW than wet feet.
Last year I bought Crocs for my DH and 3 boys. My husband decided that he wanted to wear his tennis shoes that day and the boys followed his lead. Not me, I wear my Crocs (without socks). Needless to say, a summer shower soaked their shoes and socks. They were miserable until they could get back to the room and change into their Crocs.