I've also read that the Boardwalk is a great place to be.
Another DVC resort to be at is Vero Beach (if they weren't closed.))
We were at VB last Halloween and they had costume contests, pumpkin carving contests, Halloween activities all day, slime relays, etc. They had trick or treating in the evening and a Halloween party with tons of goodies, donuts, cider, a DJ, etc.