Narita airport gives you an impression old and boring if you are flying a foreign carrier. Why don't you try to take a bus and go to a new terminal where JAL planes land ( I think that is Terminal 1, I am not sure)? The building is brighter and newer. There are at least some restaurants, book shops, post offices, and etc. I don't recommend to get out the airport unless you are comfortable with the public transportation there. (believe me, it is very complicated for foreigners...) from native Japanese