Comment by steveBK123

Yes as recently as 2010s Japanese travel as a westerner was mildly stressful managing your cash balance.

Taxis, conbinis and restaurants all wanted cash.

Lots of ATMs (majority even) don't take western ATM cards, so you need to look out for JP/7-11/Citi? ones.

Delicate balance of keeping enough yen so you don't run out / have to go out of your way ATM hunting but also not head home with $100s in yen you don't need.