It's funny how experiences vary. We've never gotten a bad meal at 50's Prime Time, but they have definitely toned down the interaction. I think that's probably because some of them got too carried away with it. I once had to flat out tell a server that his tip was going to be a lot smaller than he expected if he didn't stop nagging me to eat the honey-covered baby carrots that came with my meal. This after twice explaining that I was pregnant and had gestational diabetes, so I wasn't going to eat that much sugar.
As it stands, right now I only have two restaurants on my "won't go there again unless there are major changes" list.
Biergarten - Heresy, I know. I really did like the dancing and singing, and the servers were wonderful. My husband and younger daughter loved it. My older daughter and I did not like the food. Pan after pan of greasy, unidentifiable meat, nothing labeled in a non-German way, so there were a lot of mystery foods on my plate. I had to keep making trips back to find something I found edible, though my husband was delighted to eat my cast-offs. It took quite a bit of experimentation to get what I felt was a full meal.
Sci-Fi Dine In Theater - Love the theme. Adore it. But the food was way overpriced for the amount we got. Worst of all, the last two times we went the screen was out of focus. It gave me a splitting headache, and one of my daughters threw up after the meals. Yes, meals, she threw up both times. We want so badly to love this restaurant, but we've only had a truly good experience there once, and that time we only ordered desserts and not meals.