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!
True, that was the “technically” part. If it’s rush hour and everyone is standing on all the steps on the right and everyone is walking as fast as they can on the left then the overall rate of people is less than if everyone was standing more densely. At quieter times then the people who need to rush can get there faster because they don’t need to stop at the beginning while they wait to get on.