Are you taking any children? If so, are they dinosaur fans?
Both of my two girls are big dinosaur fans and so they really loved TRex. Food was decent. It is a themed restaurant so I did not expect what I might out of Cali Grill or Artist Point. That said, I thought the food was fine. But, when it comes down to it, we did not go there primarily for the food.
And, even though I knew my girls would like it, we only went there because we stayed off-site for the beginning of our last trip, we were close to DTD, and we had our first night free due to the time of our flight arrival. I am not a big fan of DTD. I personally prefer the parks or resorts.
All that said, if you have dino-crazed kids (or adults), it is a pretty cool place.