I would definitely recommend the breakfast over the dinner. Last Jan., my dh, dd8 and I had breakfast at Chef Mickey's--the food was typical and the character interaction was great! Last week, we had dinner there for my dd's 9th birthday--the food was pretty lame, and the character interaction was only fair (too many people, I think). I feel that the breakfast is a better deal, and you could make lunch out of it by scheduling a later dining time (I think 11:15 might be the latest).
Good luck with whatever you choose!