I would vote for T-Rex. No, they don't take the dining plan but IMO, it is well worth it. We ate there in October & all my kids loved it. My 2 y.o. loved the atmosphere, he & my 8 y.o. also liked the digging area. It was a really fun restaurant. We got there around 11:15. They open at 11 & it wasn't crowded at all.
If you go, the chocolate extention is to die for!