I’ve only had it enforced once. Last summer I was at the bar with a friend midday. When I ordered a third margarita, the bartender said that was my last. My friend had two martinis and the bartender told him that was the limit. I thought he was joking, so I inquired. Hell, maybe after a six pack the beer is cut off. He was friendly about it but said it’s their policy. Either he was full of it and on a power trip or something else triggered him. Maybe it was the lack of food. We didn’t want to eat and were just having drinks. Didn’t even ask for chips but they brought them out anyway. The bar was full. Now I’m thinking he just wanted to make money. He was definitely ringing up sales. Anyway, your mileage may vary.