For some reason there are a lot of poor reviews for Chef Mickey's on the board.
Personally, we go to Chef Mickey's every time we are @ WDW and have a blast. It is a fun atmosphere....all the main players (Mickey, Donald, Minnie, Goofy, and Pluto) are there! The food is your typical buffet food...nothing too extraordinary. American cuisine---salads, pizza, make your own sundaes (which are great!). And as for noise level...I would say it is noisy...but I think that is what you would expect at a restaurant that caters to young kids. Nothing obnoxious though.
I think the experience is fun and getting pics with all of the characters without having to race all around the parks can't be beat!!!
I say go for it!