Where I work, if the kids can be heard in the kitchen, the manager will politely tell the kid themselves to please use and inside voice. Its rude to let you kid behave like little brats.

And I bet they left their silverware on the floor along with some crushed crayons, spilled a coke, and left 1/2 of their food either on the floor or on the table for the busboy to pick up...

Seriously lady... if you wouldn't let your kids do it at home, don't let them do it in public.