Japan is the easiest difficult country in the world to travel in. Everything works, everything is clean, everything runs on time, and almost nobody will be rude to you – and yet the first forty-eight hours can feel like being handed a beautifully made machine with no manual. The friction is never about danger or discomfort. It is about small systems you have not been taught: which card to tap, which queue to stand in, which side of the escalator, whether you can eat this standing up.

This page is the manual. It is the practical layer that sits underneath every other Japan piece on this site, and I keep it current rather than rewriting it into each guide. Everything here was checked in October 2026, and a lot of it has changed in the last eighteen months.