Well, I have not been to Chef Mickey's before but I'd go there for the characters. Not too impressed with Ohana or Whispering Canyon, and probably wouldn't go to either again unless staying at those resorts. I'd like to go to Boma but if not staying at Animal Kingdom Lodge, Tusker House in AK Park seems similar.
But, I probably would not go to any of them... I like so many other restaurants in WDW better.
We had an ADR for Chef Mickey's breakfast both our past trips but canceled while at WDW. In 2009, we changed our plans to go to HS that day instead. In 2010, it was scheduled for our last day and we decided to do lunch in Epcot instead. Nearing the end of our 2010 trip, we had already seen plenty of Mickey and Friends.... and the food at Chef Mickey's doesn't get the best reviews. If going during a busy time of year, I can see the value of Chef Mickeys - not having to wait in line to see characters.