Random Japanese Etiquette I've Learned Pt. 1
When you dip sushi in soy sauce, you dip the fish side, not the rice. This prevents the soy from soaking into to rice and making it fall apart, plus it is the proper amount to enhance the flavor of the fish rather than overpowering it.
It is not recommended and can even be considered to be disrespectful to tip someone in a restaurant in some cases.
I have a couple of these as well:
Don't stick your chopsticks straight up in your rice, it's an offering to the dead now.
Don't pass food in the air with chopsticks, as this is part of a ritual they do with the bones of cremated dead loved ones, they take the bones and pass them with chopsticks to put them in a jar. Don't treat your food the same way.
During rush hour, get off the train to allow others to get out. If you exited the train to help others get out, you are reserved a spot back in.
Those are all I can think of off the top of my head, but my dad taught me a whole bunch of those sort of things a while ago when I had a trip to Japan.
Also, don't impale stuff with your chopsticks. They are for picking up pieces of food, not skewering it.
i am wondering if it would be considered rude/disrespectful if you were to not eat sushi if it was given to you. the way i was raised was i had to eat what was given to me and i was wondering if it would be the same in Japan
I know that in a lot of families you're expected to eat what you're given, but as far as Japanese culture goes I haven't heard of anything like that. It's entirely possible but I personally don't think that's a thing there
Actually, I take that back. I found that it's considered rude if you were to not finish your food, so my advice for being in Japan would be to take/order less food than you think you can eat, that way you can finish it all.