For your own safety, please don't walk barefoot through the queue. Not only is it liability on Universal's end (if you cut yourself on something, they could be at fault for not enforcing it) but also for common sense reasons. You're more than welcome to sit on them or hold them, but keep them with you please.
It's a dark ride similar to Spiderman. You move through different rooms mixed with the real sets and also curved screens to simulate flying through Hogwarts. Your ride vehicle is a 4 seat bench mounted on a robotic arm. The robotic arm you can't see, but it turns you, moves you up and down, even on your back, but never upside-down. The seat is designed so which your legs do dangle, which is why people ask about loose fitting shoes.
No worries. I figured everyone could tell I was kidding about that. I wear the paper booties at airport security. I'm not about to walk barefoot at an amusement park and mess up my pedicure.
