The problem with table service in a theme park is two fold. One, most of the time people are just day guests and only want something fast and they are generally in the mood for theme park/carnival food. And two, because they are hot, sweaty theme park guests, it is less than conducive for any kind of fine dining atmosphere.
We were just discussing the other day how even in one of Disney's top tier restaurants (California Grill), even though they have a suggested dress code and it's outside of a park people still show up in sweaty, gross clothes from the park. On top of that the food is pearls before swine for so many of these people. I was reading the other day where people were complaining about the lack of chicken strips and pizza there...
Now I love sit down dining in the parks, but it's one of those things where I will plan a visit around eating in one of them. I've been to many of the Disney restaurants, to Mythos, Confisco, and Finnegan's at Universal, and to Sharks at SeaWorld and Serengeti Overlook at Busch Gardens. I love them all, but I just know that we'll often be seated alongside the "great unwashed" who's bratty kids are loud and annoying.