Interesting Culture shock in Japan?

I don't know if its culture shock, but a cultural thing that I can't get used to, is not eating in public, sometimes you see kids eating in public while walking, but I do it often and I often get many people looking at me eating, like "What are you doing?" I know I should stop, but sometimes I have no other time to eat besides on my 20 minute walk to the station.

okay, it’s not really a culture shock but… yelling for help at restaurants was definitely something that took time to get used to.

Coming from America where it’s typical to stair down your waiter until they come… yelling “sumimasen“ and getting help right away is actually a nice change.