The premise is a small restaurant, so you don't have to expect that the people who come here to eat (for the most part) are public-spirited, but things come up and something has to be done about it.

The most common approach is for the waiter or owner to step in and tell the parents to keep their kids under control, and I can't think of a better way to do this effectively. This kind of thing happens whether it's in a small restaurant or a Pizza Hut or some other more upscale place. Small restaurants are forced to survive and can't afford to heckle customers like this.

The subject is a thoughtful person, so think about the atmosphere of the society we live in, isn't it such a small restaurant?

In the end, I'm sorry I didn't come up with a good solution that was both surprisingly claptrap and surprisingly good, but it's just reality.