The sudden switch could be something else. I know waiters that remember wich “category” you are in based on your last tip several weeks ago. They have a strong

The sudden switch could be something else. I know waiters that remember wich “category” you are in based on your last tip several weeks ago. They have a strong incentive to remember because of the extra money. I can relate from my part time job at a food store. After one year you start to remember what every single customer is buying, and what’s differ this week. Not everyone is probably this way, but you only need that one waiter to influence the rest.