Working at a large teaching hospital in France in the 70's I was surprised to see that everything stopped at lunchtime and dinner, when the drs retired to the Doctors Mess for a formal lunch. One glass pf beer/wine was normal, but >1 seen as bad manners.
I expect that has disappeared, though the tradition of walking around the table, tapping each diner a "handshake" on the shoulder before you took your place apparently remains in some.
Mac
BTW: they also had a 'night chef' for the doctors - no curling sarnies as in my time in the UK, but a fresh steak and chips if you wanted. Nowadays you can get a Diet-Coke from the machine, but that's about all. How times change....