Let me just get this out of the way. I am not a fan of (mostly misbehaved) kids in adult restaurants.
I understand that a lot of parents think their child is the exception - and I am absolutely sure that some are - but there are parents who are just completely wrong about that. Their child is a nightmare for other patrons to have in a restaurant where there is no kiddie meal. Thing is - I don't blame the kid, I blame the parents who don't pay attention.
You know where bad parenting is really annoying? Nail salons. You're 'stuck' (with wet nails, no less) in one place for a certain amount of time. Lemme tell you what happened to me...get comfy.