Of course. Not debating that at all. As an FO buying another FO a European dinner for 25 euro after a beer and a meal "always" is a little stretch, sorry.

My main gist was trying to figure out what the "tradition" is with these certain rules. Not slamming it, just trying to figure out where Shrek was coming from.

Like the poster said prior to me, when I was a new-hire, I was also gracious when a Capt bought me a beer, or even a meal. However, it was never mandatory with certain rules and I don't think it should be.

As you said, each to their own.