I have never been to the character breakfast at AK, but have heard mixed reviews, in that the characters are good, but the food is pretty much "just OK".
At Disney MGM, I went to the character lunch when it was Minnie and Goofy, and loved it. Really miss that and wish, even if they changed the characters they would use that venue again for a character meal.
Never went, but loved the theming of the character meal that used to be where Playhouse Disney is now--Soundstage, I think it was called. Also, loved the Catwalk Bar which was behind and above the Soundstage.... it was a great little hideaway in the hot part of the day. It was always fun to sit up there and character watch!