We went in January with seven adults (no kids). It was a good time. The character interaction was excellent (better than Chef Mickeys). They really spent a good amount of time with us and we ended up with lots of pictures. Our best character pictures came from LTT.
The meal took longer than the buffets. I think we were there at least an hour (probably more). The service was very slow. We were constantly looking for the server, and eventually had to grab another section's server that happened to walk by our table. I'm sure it was an isolated incident, they were very busy that night, but it was still a drag on the meal.
Foodwise, it was good. We ate tons of Mac & Cheese, so it's not just for kids. But overall it wasn't our favorite. Nothing really stood out, unlike Boma or Ohana which were very memorable food experiences. Sure, it's just basic All-American comfort food. But we had a better meal at 50's Prime Time Cafe.
In the end, I'm not sure we'd go back. If we want more character pictures on the next trip, then this would be our #1 place to visit. But in terms of food selection and service, we'd probably want to try some place else. Of course, there aren't many table service choices at the Magic Kingdom. So we'll probably end up back at LTT eventually.