Wear and tear and cleaning up isn't some binary budgeted-or-not thing. You can expect a certain flow and behaviour, and something can radically change that. If some popular band said they were doing a goodbye concert and it was only available in AR at a park, you can bet it'd cause far more wear and tear in one day than they budgeted for a long time.

But trying to block the AR game is the wrong approach. They should instead implement a generic way to handle such things. Either fine people, or have some maximum occupancy rules.