This is not a Chademo fast charger! Tesla owners will need a J1772 adaptor which is different from the Chademo adaptor you get with the car.
3 hours parking is “free” if you spend 1000yen or more.
Or 660 yen for 3 hours just parking.
3 hours charging at about 21km/h = 360yen using WAON.
I got about 50-60km extra range after 3 hours.
It costs more if you don't have a WAON card, so it's recommended.