There was a Snow White show in Fantasyland in DL. It's gone right now but I know they are bringing it back for the Summer crowd.
As far as DCA, there is a great show in the Hyperion theater called Aladdin's Musical Spectacular. It is a mini broadway show. Maybe you can check that out. It's really good and a good break from the heat.
Have fun, maybe I'll see you there. I work there.