If you want the character experience, then sure, do it. It is the worst of the buffet's on property and IMO, and many others, one of the worst overall TS' on property.
The atmosphere is nothing special, just a buffet layout without a theme besides the huge statue mickey and a hectic loud atmosphere worse than the others. It's tolerable for breakfast, while still being the least rated of the character meal locations. The food is comparable to Old Country Buffet or Golden Corral.
If you want Mickey, Minnie and Donald with a unique theme and better buffet offerings, with quicker food replenishment and a less hectic atmosphere, go to Tusker House. The nicest of the buffet character meals would be 1900 Park Fare.