My impressions/observations:
1) Amazingly clean public restrooms, subway stations, and streets
2) Extremes between quirky and traditional
3) Some of my favorite moments were those that were unplanned. Like meeting the man doing reed boats on the Philosopher's Path and trying on a kimono at the visitor's center in Tokyo.
4) Refreshing to be surrounded by respect, order and politeness.
5) Cuteness shows up everywhere, from construction sites to escalator handrails.