Six essential tips to go to Japan and truly enjoy the country are: 1. Reboot your manners. Japanese people follow the rules and misbehaving disrupts their mindset.  2. Most Japanese you will meet, struggle with English but try to help you the most they can. 3. Japanese make lines for everything and do not break them. Don’t be that person that tries to skip the line.  4. Metro, subway and train systems are complicated. You will need Google Maps (or similar) to know the best routes quickly. 5. You can pay with a credit card but you will need cash in a few situations, like street markets or vending machines.   6. Don’t rely on free wi-fi to have Internet connection. Get a SIM card with enough data to, at least, move around and orientate yourself.