Confession Time, we have a daughter who did the same thing with her kids, thankfully they are older now and not so bad, but I refused to go out to dinner with them, would always make an excuse. We never let our kids run around, they sat and ate.

It was so embarrassing to go out with them, one kid would get under the table and wouldn't come out, then he would go over to a patrons booth and sit down with them. If it was a buffet they would help themselves which I don't like to see the kids fingering the food. One couple was celebrating their anniversary and the kid would go over to their table and stare at them. They also would just walk around and in the process just about trip the waitress. They would talk so loud the adults couldn't talk.
No it didn't do any good to talk to our daughter, she was bringing them up to do whatever they wanted to do, I do believe she read that somewhere in a baby book before they were born and she is paying the price now.

Jackie, Miss Daisy and Perry