They are very strict about the 48" minimum to ride alone. My younger two kids are now over that - at 51" and 52" - but we had several trips where they barely made it and they were measured every time to check. If it's a situation of the child not being able to ride at all, then sometimes you might get someone overhearing it who is willing to help out. I've ridden Woody Woodpecker many, many times with kids who I didn't know. A parent would come with two kids under 48" and no other adult to child swap with so I volunteered to help them out. (That won't help with single rider line, but could at least get your child on the ride if you are unable to ride it).