I know this is probably a silly question, but does space mountain use a seat belt and a bar to keep you in place? Next time we go, our oldest child will very likely be tall enough to ride it for the first time, she's just very skinny. She loves roller coasters so I know she'll be excited for it, but she likely won't be able to brace herself with her legs. I was just curious as to what's there for the safety. Thank you!