I get really annoyed and I really, really want to go up and tell the kit to be quiet or something, but obviously I can't do that without breaking all kinds of Rules. I still think a stranger telling a kid to be quiet would often shut some of them up, though, because crying is a way of getting attention and this would not be the kind of attention that they would be after. But yeah, I would never actually do that.

If it were my kid, I would explain that if they don't shut up, next time I go to McDonalds I'm not buying them anything and they can eat an apple instead. Stuff like that. I would treat my kids when they are good and punish them when they are bad, so that they learn quickly what is and is not okay. Making a scene? Not okay.