I have a 3 year old 42" daredevil DD who is dying to try Space Mountain. She's done Splash and BTMR. I read someplace that the cars are "single seating" on Space Mountain. My concern is that she may get scared 1/2 way through and freak out. Does anyone know what type of seating/belts/restraints are used? Anyone else have a 3 year old on Space Mountain or are we just nuts?