Capsule etiquette?

Is there such a thing as general capsule hotel etiquette? My first place in Tokyo was amazing, quiet, polite, etc

But in Osaka? It's midnight and people are fully unpacking bags, slamming them around on upper level capsules, using electric toothbrushes and hairdryers (this one especially killed because theres a separate bathroom with noone sleeping), and one person is just obsessed with Velcro. At midnight.

Surely there's such a thing as basic capsule etiquette? Or am I expecting too much from a capsule hotel, as a traveller?