To the OP, I am in the same situation. My DD4 talks of nothing but finally riding the "tire of terr." Her favorite ride is the Haunted Mansion. But I just don't know. I am terrified of TOT and have never been on the ride. My DH says to go for it, but he would let her run with scissors and pet stray dogs if I wasn't around. My DD7 has been really encouraging her, which doesn't help. I think when it comes down to stepping on the ride, I will chicken out and she will follow me. I have been watching the videos to try to prepare (both of us). When do you go? We are going at the end of October.
.. The good parent knows best for their kid... end of story
And just yesterday, DD rode her 

here here!