We just got back and I hate to say this, because for the most part I think giant chains are evil and hurt local economies, but it's quite hard to find a good place to eat down there anymore that isn't a chain.
I'm not saying that they aren't around. I am sure they are, but most of the buffet's are real bad now and the smaller restaurants are hit and miss. The Chains like Perkins, Olive Garden and the rest have a higher power to live up to and as such are as likely to shrug off a customer having a bad experience.
We went to Bill Wong's Buffet based on the recommendation in the Unofficial guide to WDW w/kids and it was BRUTAL. Mind you we did go about 45 minutes before closing, but the trays were half empty or less, only 3 items were refilled in the entire time we were there and the majority of it appeared to have been sitting for well over an hour already.
We went to another one the following night as my daughter likes buffets, and unfortunately I can't remember the name but it had fewer selections ( during normal dinner hours ) and the taste was horrible. ( although it was stocked well ).
The dinner we had at Olive Garden was good tasting for a chain, but the service was actually a little better than we expect from them.
We found Perkins to be a nice place for breakfast, decent food and not bad prices... very much like a Friendly's to those from the Northeast...
But out of the 5 non chains that we tried to eat at, only 1 was good enough to return to. That is not such a good percentage. Stick with the larger chains if you want to be safe.