В©2018 cakedesignersdefrance.com - 12 Dec 2014 Here is a must have list of Japanese Do's and Don'ts for anyone going to Japan. bowing to the 16 year old kid at the 7-11 cash register after buying a sandwich is an all too common GFP. 8 DON'T slurp noodles like spaghetti that don't have a broth or dipping sauce. 18 . DON'T tip – it can be insulting.