If you have an ill-mannered child your have ill-mannered parents. The apple doesn;t fall far from the tree.
I despise parents that teach "restaurant manners." My kids are never allowed to talk loudly, reach, etc. They don't do it at home, so there is no shock to them in public.
I took my kids, they were 12 & 9 at the time to Emeril's (Delmonico) in Las Vegas. When we entered the restaurantI could see the looks of dread from the faces of the other patrons, and the wait staff. However, the kids were stellar in their behavior, and I got complemented numerous times for having such well behaved children. They even got free desert from the manager.
This was not the first experience. Even when they were toddlers, and we went to family restaurants, the ex and I would get compliments over the kids.
LABD, of the great parent, class