1. You need to take your shoes off right when coming in.
2. You cannot eat in public
3. You cannot drink in public
4. It is considered uncouth to blow your nose in public
5. The Japanese do not sleep in beds
6. It's really really not ok to be late
7. If you have any tattoos anywhere you cannot go to the pool, spa or hot springs
8. There are no dirty cars or trucks, all vehicles are sparkling clean.
9. The Japanese drive on the other side of the road.
10. We saw zero other westerners in Osaka in three days. We got looked at a lot.