there is an inquiry form but Japanese page only. if you could use translator app.
https://rent.toyota.co.jp/inquiry/form/

Looks good to go for both the plug and the voltage!

Normally no. I do make sure to use a credit card that doesn’t charge currency exchange fees. Those add up!

Definitely agree with @joshgrisdale. A pocket WiFi is easy and indispensable. Have a blast!

If you want to sit on the deck (the area between carriages where the door and toilet is, you can be a little looser with timing.

However, the seats in the accessible carriage are reserved, so you can’t just sit anywhere and do need to book them. (There are other carriages that are free seating and it is like the metro where you sit where it is…

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