Animeniax:
It's very strange the way you speak about Japan.
It's as if it was a giant zoo that 'foreigners' shouldn't spoil with their own culture and rules.
It's as is tourists were colons that in the end would kill the culture of a less advanced civilisation... or even small group of underdeveloped people.

I don't really know why you react that way. It's as if you were a extreme right japan nationalist. But that would be strange if you're not even japanese in the first place.

In the end, eventhough you try to educate us in not spoiling the culture and people there, there's little you can do.
Japanese see for themselves. Some travel, they use the internet, they get to meet people from all over the world. Yet it seems they can protect themselves for quick cultural changes. But they will evolve, no matter what. And it's not 10 gootwooters that will change anything in the end. Even 1 million tourists staying there more than a month can't change that.

So I would just say this:
While you're there, enjoy your time, don't be deceived by false perception based on anime. Japan is a huge society with good and bad sides like any other contry in the world. Most bad sides have the exact same roots as in your own country. Some other may be local.
Try to be respectul of anything and try to learn what is considered unrespectful you may not know of.

Then, again, have the most fun you can dream of and "Open you mind"