:D I know there's this park over here (Walibi) that has mostly big rollercoasters. When we went there as kids, my youngest brother was like 5 or something... and we went on one of those days off. So there's this kids part, and he had an employee that just walked him from one ride to another, started up the rides, let him ride until he didn't want anymore, then took him to the next one.
He was the only little kid in the park that day XD