My 6-year-old loves roller coasters (Space Mountain was her favorite), but she freaked out at FOP last week and we had to go out the chicken exit. I will say, she doesn’t like Soarin (she tends to get motion sickness), but what really did it, I think, was all the buildup. The preshow stuff just freaked her out, and at the end, they warn you that it’s intense and to tell a CM if you don’t want to ride. I looked down at her and she was shaking and on the verge of tears. So we gave up on that one for her this year.
ETA: To me, it was like a much more intense version of Soarin. After I rode it, I felt pretty confident that my daughter would have hated it and was glad she didn’t ride.