Hey forum!

I hope you are all doing well.
My name is Patric and I'm living in Tokyo at the moment.

It would be great if some of you had any advice for me. I'm looking for some guidance on how to behave around my girlfriends grandparents.

I'm Swiss, my girl is half Japanese half American and we are going to visit them sometime in the next months.. it scares me.

All the little things to mind...

-greeting
-politeness level
-the first visit
-gifts
-formalities
-behavior in general
-etc

Best regards
pato