If it's nice and hot and you need a break, head into the Animation building at DCA. Really love that place. If you're a Marvel fan, the usually out-of-date Innoventions now features a rotating gallery of Marvel props. Finally, although Roger Rabbit has had it's spinning neutered to ridiculous levels of non...spinning you should check it out. It's only available at DLR and the queue is stunning.
Places to eat (casual): Hungry Bear (amazing mini pies and burgers), Cozy Cone (for their exclusive HP-inspired drinks), Boardwalk Pizza, Gumbo stand in New Orleans Square.
Non-casual (ritzy, if you're trying to save money just get their desserts, which are better than the meals!): Carthay Circle, Blue Bayou
For candy, do the Critter Country candy shop by Pooh. That place has excellent candy that isn't even at the Candy Palace.