Yes they are very strict on age/size. We waited for 2 monorails to ride from GF to the Poly last June. We have 3 kids who were just barely 2, 5, and 8. The 2 year old was sleeping on DH. I thought since he was so small they could ride too, but they couldn't, so I rode with the girls. They didn't get those "copilot" certificates some kids get, though, but they really loved it. It was starting to rain and it was really cool.
Robin M.