First of all, thanks Richard for designing Japan.
You're welcome! I am glad you like it!
My wife, a friend and I love it for 3 players. Although I have two questions that came up and I didn't find the answer in the rules that came with the map. The two questions are:
1. How many dices are rolled during Goods Production?
2. How many rounds per game?
All standard rules of AOS apply except I modified them: Loco, Urbanization and building across water. (So 1 die per player, and 8 turns in 4 player game, 10 in 3 player game)