I don't think that I've truly had such an awful meal anywhere in WDW that I'd never go back again. That being said on our last trip I did have a bad food experience at Fulton's Crabhouse in DTD, but the server did everything in his power to correct the problem, so I wasn't upset. It was our "splurge" dinner of the trip to celebrate my parent's anniversary, so they insisted I order a $40 piece of steak. Well, maybe it was just the piece I got, but it was so fatty and rubberery that after only a few bites my jaw ached from trying to chew on it. Still, I'm not one to complain, so I managed to get maybe a quarter of it down before our waiter noticed that I wasn't really eating. He asked if everything was okay and of course my Dad very politely explained the situation to him. He apologized and offered to get me a new steak, but at that point I wasn't too hungry anyway. Then a few minutes later the manager came over to apologize and ask if he could get me a new steak. I filled up on dessert instead and when the bill arrived they had comped off my entire steak, which was a nice surprise because we hadn't expected them to do anything for us. I'm chalking it up to a fluke.
The only other negative dining experience we had was on another trip we believe that my friend got food poisening after eating fettucini alfredo at Spoodles on the Boardwalk. We'd had dinner, gone back to our hotel to change, and headed to Pleasure Island that night. Around 2-3am as we arrived back to AS Sports, she began to feel lightheaded and nauesous. At first we attributed it to the alcohol, but she'd only had three drinks. When she was up all night vomitting well into that following morning we figured that it probably was more likely something she ate.