26 Dec - 28 Tokyo
28- Tokyo to Kobe
28 - 4 Jan - day trips around Kobe and Osaka, potential trip to Tottori Sand Dunes
4 Jan Kobe to Kyoto
7 Jan Kyoto to Nagoya
9 Jan Nagoya to Takayama (we want to go to Shirakawago as a day trip while in Takayama)
11 Jan Takayama to Shizuoka
13 Jan Shizuoka to Kamakura to Tokyo
14 Jan Tokyo
16 Jan Day trip to Yokohama
Putting this into the calculator, it won't save us to get the JR pass, but what regional passes would work with this?

