Re: Japan
Ditto, on my only train ride in Nigeria as a kid - open doorways* we could sit in and throw stones out at the bushes and generally watch the scenery go by - and toilets with a flap at the bottom onto the track. I think hand washing water was optional...
* Train only went about 20MPH so not too dangerous but in the 80s 'elf and safety was unknown in Nigeria - not too different today I gather.