Pluto was also on BVS when I was there Tuesday, wearing a old-timey golfer-like hat. I didn't see Chip & Dale at all (sadly!) - I kept trying. but Mickey and Goofy were there almost every time I walked by.
I've also heard that Mickey is performing with the Red Car Trolley Boys (or whatever they are called). It's supposed to be a Newsies-style little show on Buena Vista Street.
When Minnie's Fly Girls first premiered, Minnie would come out for a meet-and-greet a few minutes after the show. I would GUESS that is still the case but I haven't heard anything one way or the other lately. She's in a cute pilot's outfit.