The Manager should have been aware enough to recognize the situation and handle it. Failing that, a Patron voicing their displeasure acts as a wake up call both for the Parents and the Manager.
I would have probably spoken to the Manager first and complained before voicing my displeasure, but I wasn't there and don't know what the circumstances were.
Therefore, I can't say if there was, or was not, a better way to handle it.
