Winnie the Pooh would be a lot of fun, but I don't know if I'd be claustrophobic or not.
Honey Lemon would be fun, especially since I'm taller (most Disney ladies are on the shorter side.
).
But I think Maleficent would be the most fun for me. I was racing with her the other day on speedway and shouting out insults to the computerized players, and I had waaaaaay too much fun.