The transport system is very user-friendly: if you buy a ticket for the train it will have a colour code on it. There are coloured lines painted on the ground and you just follow the same colour as your ticket and it leads you to the correct station for that destination. The trams give you partial refunds if you don't use all the cost of your journey and you put either 4 or two diffrently coloured tickets together to get another journey. When you get on a bus you take a ticket which has a number on it and when you get off you look at the amount under that number at the front of the bus and that is how much you put in the box. The Japanese are generally honest and orderly because everything moves quickly and efficiently but would slow down a lot otherwise because the population is so large. If you get stuck there is plenty who will help. Just remember to get the concierge to write down the name of your hotel in Japanese so that you can show it to anyone or taxi driver if you need to get back. Enjoy your trip and don't worry - it is a lovely country.