How strict are you with your children at a restaurant?

My son is not big on manners. He’s only 11, but still, he should behave somewhat politely, we think. He was in a rush all night long, unwilling to wait for others to finish. He was harassing his older sister quite a bit.

So we were constantly telling him how he should behave. It was a real pain. It is very tempting to relax a little, except he is becoming annoying—perhaps deliberately?

How are your kids when you eat out at a fancy restaurant? What do you find yourself needing to do?