Hello,
I don't want to tell anyone what to do, but I think that considering the recents informations on Fukushima situation,
I'll personnally not go to Japan for now, but really want to go there one day.
A lot of informations can be find on this website (in french and english) :
http://fukushima.over-blog.fr/
Peace.
I myself just came back from Japan. Traveled from Tokyo to Kyoto, to Nara, and up to Yokosuka. I still have a full head of hair, and my skin is not peeling, so the radiation isn't a problem ;-)
A few strange things I learned throughout my journey:
1.) Yokosuka had the nicest hotel (mercure yokosuka), but had the least to do. I stayed right off of Dobuita street. Literally a 2 minute walk from my hotel door. Unfortunately Dobuita street does not look that much like Shenmue Dobuita, as it is much smaller. It is also ruined at night by the mass amount of idiotic sailors walking around yelling and swearing. They even wander out into the surrounding neighborhoods. This made it so my friend and I got looked at by the locals in a poor light. The Japanese natives were the most rude in this area and I don't blame them one bit.
http://sphotos.xx.fbcdn.net/hphotos-ash3/552884_888743221244_31731558_n.jpg
2.) Also one thing I learned is that the Japanese are very polite and usually willing to help but the language barrier can be very frustrating at times. I know a decent amount of Japanese and found it very difficult to get to some areas and navigate some places. It is extremely rude to go into another country and not at least try to speak the native language. At times I felt embarressed and upset at myself for not being more fluent. I feel that knowing the language is a necessity contrary to what others say. It will make the experience much more enjoyable.
http://a4.sphotos.ak.fbcdn.net/hphotos-ak-ash4/295037_888396660754_1852126569_n.jpg
3.) Speaking with my host in Kyoto, I told her how some of the older Japanese men would joke around with us in the morning puffing out their arms and one was even jokingly shadowboxing and fake lifting weights by me. It was creepy at times as they grabbed my arms and were squeezing them :| I was a college athlete and my friend is a personal trainer so we both stick out like sore thumbs. My host said they don't often see tall or muscular guys in Japan, and I mentioned how we had only seen maybe 3 chubby or obese people. I could go to the mall where I am from and within 10 seconds of walking in the door I could count 5. She said the Japanese look down on fat people because it shows a lack of willpower and signs of laziness.
http://a1.sphotos.ak.fbcdn.net/hphotos-ak-ash3/579287_887619103984_194303500_36565411_1807148015_n.jpgr
You could really see why there were so few obese people in Japan. A lot of people rode bikes and the portion sizes in food were quite small. They had virtually no milk, and their chicken and beef was of very poor quality. Yet the portion sizes were enough that one wouldn't gorge themselves. The transportation in Japan was also convenient, however I did not always use it as I was too excited and wanted to explore...however after racking up 79 miles on the pedometer I thought twice about using public transportation. We rented bikes and rode them around Kyoto to visit some of the landmarks, which was nice. Overall the trip was amazing (except the flight, 11 and a half hours from LA crammed in a tiny seat.) If you plan on going I would say skip Yokosuka all together. the streets of Tokyo resemble those of Ryo's Shenmue much more.
http://sphotos.xx.fbcdn.net/hphotos-ash2/36594_887982081574_2140762442_n.jpg