We went to both last month...Both have basic chain foods...However, we found adult meals to be a bit better at Rainforest....
TR is a very cool experience if your child is into dinosaurs...Our server was okay but nothing to write home about...The food was okay...It is very loud at times...But still very cool...I would not pay OOP if you are on the deluxe plan unless your child is crazy for dinos like my one DS...DH and one DS says this is better....
RFC was the request of your child and you are considering paying OOP for your child...You sound like me...We do anything to make our kids happy....So if you are going to reach into your own pocket I would go with Rainforest...The atmosphere is fun, service is fast, food is basic but good...It also gets loud there but we found TR to be louder...One DS and myself like this one more....
Just remember to order something simple no matter which you choose...The do burgers, chicken fingers, wraps, that kind of thing well...Do not order a steak and think it is going to be great.