Well, my wife is Japanese, so I usually go every year. Been 6 times now. I love it there. Her family lives on the outskirts of Tokyo, and I've been all around the city, also trips to Osaka, Kyoto, Nagano, Nikko and Izu.
You might want to rethink your travel time //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif I've only been there once in the summer and I'm never doing that again //content.invisioncic.com/y282845/emoticons/eek.gif.771b7a90cf45cabdc554ff1121c21c4a.gif I've been to Florida and the Southwest in the summer here in the US, but no place here can compare to how brutal it gets in the cities there. It wasn't too bad up in the mountains though.