I went into a restaurant with my daughter (an adult) and while we were waiting for our meal, the kid in the booth behind me, kept kicking the back of my booth and the parents were doing nothing. I told the kid to stop kicking the back when he looked over the top and the parents came to the defense of the kid. Their reasoning was, "he's just a kid." My response was, "yes, he's just a kid and it's the parents job to control him when in public places." They stopped the kid from kicking the backing and shut up.
The management has a good policy. Children must be well behaved in restaurants, especially fine-dining restaurants. If they cannot behave properly, the parents need to take them to "Chuck E. Cheese's," or a McDonald's, where they're expected to behave like animals. If the child is too young to be controlled (a toddler or infant), the parents should just find a sitter or order delivery until it's older.
My partner and I went to a PG-13 movie, while sitting there, a couple brought in their child who appeared to be 5 years old, who upon seeing the violence, began screaming. There's a reason for the rating system and parents are supposed to use a degree of intelligence in what they watch with their kids. If they want to watch anything more than a "G" rated movie, they should leave the kids with a sitter.