This always amazes me, you either love Chef Mickey's or you hate it. There seems to be very little middle ground.
That being said, we went last January, and quite enjoyed it. We had an early PS (5PM) and everything was hot fresh and pretty tasty. We will be going back on Sunday the 18th and I will be sure to report back.
I think if you go in with realistic expectations you will have a much better experience.
a.) It's a buffet
b.) It's crawling with kids
c.) It will be loud and frantic
d.) the characters can only see so many tables in a set amount of time, your turn will come!
Go, enjoy, and wave those napkins.