Well, if you want to see characters, I would say Mickey's Backyard BBQ. However, I haven't been there since I was about 9 years old so I can't really give you much detail on that.
However, I have been to Whispering Canyon and it is delicious! I always enjoy going there a lot. The waiters and waitresses are a little bit loud though, so as long as it doesn't scare the littler ones you should be fine. It's not a character meal, but it is a very good dining option for sure.