I keener old smoking/non smoking sections at restaurants. They should do the same thing with children/no children sections. I was at a testy with a few friends last night and the table next to mine had two screaming children. Another table had their 4 maybe 5 year old son stun up and down the aisle nearly knocking over the waitress with a tray full of drinks. We asked to move because it was just too noisy and disturbing, after that we had no more distractions and were actually able to converse with one another.
A lot of that reminds me of my sister, her husband believes in being the kids "friend" rather than the parent and says things like "boys will be boys" and "they are just getting their energy out" i just roll my eyes when he says that. NO it's a restaurant not a playground.
As a parent myself i actually think it's a good idea from the other side. It's embarrassing to have your child screaming and acting a fool in public, Around other parents you would at least get a little more empathy.