The cleanliness of the country as a whole.
Taking off my shoes in the house.
Trains that ran on time - to the second
24 hr beer/Whiskey and cigarette machines (back then)
Woman approaching me and making the first move and how easy it was for a shy male to meet women.
Buses that you boarded from the rear and paid when you got off.
It was cool to drink alcohol and was considered a "hobby"
The narrow roads where one car had to pull over to allow another to pass.
Teeny tiny apartments with no heat!
All you can drink discos and pubs for 3,000 yen (US$10 back then)
All night ramen shops and street ramen vendors.
Hostess bars. (Foolishly spent a lot of yen there in the early days)
The ungodly number of bicycles parked at a train station.
The high cost of tolls on the expressways.
The fact that people used to wash the sidewalks daily!
Bosozoku motorcycle gangs that did nothing but make noise and impede the flow of traffic and the police following behind but not stopping them.
Trains that stopped running at midnight!
Sumo, which I thought boring at first, but came to love.
Japanese TV - weird but interesting.
The rainy season where it rained everyday for a month and mold would grow on everything.
Public baths. To name a few.