As a parent with one of those kids, you never know which mode they will start off with, even with the right prompting. And yes, you correct them and steer them in the right direction and hope they will eventually learn how to behave.
Luckily, those track balls were rock solid and no worse for wear. The parents were very well intentioned and attentive and did quickly redirect the kids. But it was hilarious to see how much fun they were having before the parents stepped in. Like I bet they'll have great memories of the museum visit.