[krageon]

On an infrastructure level Japan is literally not even in the same reality as the US. The infrastructure works, everything is clean and works, the toilets are usable and good. The mobile internet infrastructure is honestly fine and most likely better than what you'd be able to get in the US (especially as a foreigner).

It will not seem backwards to a "Westerner" today. The only place where you'd really encounter forms as a human being is in government interactions (and possibly banking), which is not unusual or even particularly backwards.