Our family eats at T-Rex every trip to Orlando, and we have also been to the one in KC.
I really like their ribs (same as Rainforest Cafe) and chicken combo. Tried the nachos but didn't think they were anything special. You won't want appetizers, though, because you will definitely want to save room for their big chocolate dessert....can't remember what it is called, but it is the T-Rex version of the Rainforest Cafe Volcano dessert.....enough to share for the whole table and well worth the cost and the whole meal in my opinion.