Also, if you place your sake bottle or beer glass on the upper shelf of the sushi bar, the wife will immediately come and wipe underneath the area to prevent water circles. She will then place your sake or beer on the eating counter of the sushi bar.
I find the hovering a bit funny and strict at the same time. I don't mind learning something new at a restaurant, but I do not enjoy being scolded for doing an activity that is not necessarily wrong. What if I am a customer who enjoys a lot of soy sauce in my dish and wants to dunk my fish a few times before I eat it. Paying for expensive sushi is a privilege and I want to eat my sushi in peace.