I put the blame for this solely on the parents.
#1. They go to a new restaurant on opening weekend when the chefs as well as the waitstaff are new and just starting to learn their job. Of course, they’re going to be slow and rough around the edges.
2. The kid wanted to get up and walk around a little bit. After 20 minutes, that is not unreasonable but they made the kid just sit there. No wonder she threw a tantrum.
The kid wasn’t the &*^%$#, the parents were and if I had been the manager, I don’t know if I would be as apologetic as this manager is. Let them sue the stupid waitress. The “blood out of a turnip” phrase comes to mind. Another one is a “fool and his money are soon parted.”