I don't.
It's a public place and we all need to watch out for each other. Perhaps we need to slow our pace down a bit if a casual restaurant is a 'dangerous' place for a child to be walking around. I'm not a fan of fast paced people to begin with-those who weave in and out of traffic to get ahead, those who park illegally because they're in a hurry, those who place stress on others to satisfy their own expectations....all of 'em are on my 'special people' list. Slow down folks, let's enjoy the little ones and calmly, slowly eat our meals. If I want a quick meal, I pop a microwave dinner in the box. If you're in a hurry, make a peanut butter sandwich. Sit back, look around and enjoy humanity - or- stay home.

At least, that's my opinion.