“And how would I as a restaurant owner know or care who the person was or where they were from and whether they had been here before.”
Well, many restaurant owners are quite hands on, they know their regular customers because that is their bread and butter, so they take care of them. The waitstaff certainly knows the regulars, and whether they are good tippers or not.
....and whether they are good tippers or not.
I think you’re the first to hit on what I’ve been thinking. Perhaps he is a regular. And perhaps he’s a crappy tipper.
Being from Europe and all... maybe he didn’t know beter. Who knows?