Personally, for a sit down, TS, in a park with uniqueness, and relatively cost effective, I would choose Tusker House in AK. The lunch and dinner buffet are awesome, with unique African food, but also some stalwart favorites. My husband and a friend's husband both love this restaurant. Like love. My mom, who is not the world's most adventurous eater, requested the breakfast at Tusker for our trip next month. Yes, there are characters, but you can interact with them as much or as little as you want.
I'm also a big fan of Hoop Dee Do Revue...It's a show, but also all you care to eat, and it's corny but fun. Although, I believe DL has or had a similar meal and show...I missed it when I was there in 2007.
For QS, you've gotten a pretty good list. I also really like Sunshine Seasons in the Land pavilion. I'm also a fan of the Yak and Yeti QS. The menu is simple but tasty. And the gelato shop in France rocks, and the ice cream sandwiches made out of giant macaroons or brioche buns are a snack credit but could be a meal unto themselves.