My kids were usually well behaved in restaurants when little. Even would get comments from nearby tables. One place we went to had a divider (like a small wall) between two tables so you could flip it around to either have one large table or two smaller ones.
One of my kids leaned up against it and it swung down and gave him a bit of a bump, but no big deal. In looking at it one of the latches was broken and didn’t hold it in place securely. I switched spots with my young boy. At the end of the meal I mentioned to the cashier that the divider was not latching all the way.
He replied something like “well if your kids wouldn’t have been goofing around with it, he wouldn’t have got hurt...”. I got into him about how my kids weren’t goofing around, it was broken and I just wanted to let them know so they could fix it but now that you mention it that bump is getting bigger and my son is injured because your divider is broken and I want to talk to your manager.... Turns out he WAS the manager, and told him we would never eat there again and that we would be talking to the franchise.
The franchise said they would send out some coupons for free meals, but I told them I don’t want coupons as I would never set foot in their restaurants again, but I want the manager punished. They said they would talk to him and they still sent the coupons. Never did use them. A couple years later the place closed its doors.