What's the most interesting traditional or formal politeness behaviour or table manners in your culture? Or for any service personnel, in your restaurant?
I love all the ritualized behaviour, secret meanings and unexpected taboos - standing up when someone of higher status stands, elaborate rules for serving and eating, tapping the table to thank the server, never refuse a toast from a superior, stuff like that.
Whether it's about meals or anything else, I'd love to hear about any uncommon politeness standard or similar social behaviour that goes on in your location, culture or restaurant!
Round up (lots of cash payments still) and avoid small change.
Genuinely give a tip for an above-the-usual service. Which also means that in reverse, the default is no tips. Granted, people aren't being paid a slave wage here.