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!
It’s not more efficient in how people want to get there. The people who stand and ride the escalator have no rush to get there quicker so they get there on time. The people who want/need to go faster get there as fast as possible. In your scenario everyone MUST be slow, no? What am I missing here?