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Well, it's ALWAYS benificial to try and learn as much of the language as possible before you go. If you teach yourself some useful phrases, and even random words that you think you may need, it will help. Also, keep an electronic or book dictionary with you whenever you go out. This will help you a lot if you ever have trouble communicating with others.

Tokyo is not so difficult to find someone who speaks at least SOME English. You will probably not find many English-speakers in Aomori, but don't let that deter you. The Japanese people will be willing to help you, especially if you have a dictionary or some way to communicate with them in their language.

Rabbityama is right. Learning as much Nihongo as possible does not only help to ease communication , it would also help making your trip more enjoyable. Able to speak in local language with local people is a cultural experience that can bring fun and joy.

Besdies, always keep smiling and be polite. Japanese people are very willing to help foreigners even they don't speak English.

Enjoy your trip.

Oo sorry that all answers got thumb downs...I shall reserved mine as our Japan expect Joriental would answer your question correctly. Nobody get perfect answers for you because every answers would have many thumb ups as well as downs except for Joriental's.

plan like you would for any trip