Similarly, I've been on two long trips to Japan recently and had no issues either. Though I suspect that there's less of an issue when the conbini you're in ha

Similarly, I've been on two long trips to Japan recently and had no issues either. Though I suspect that there's less of an issue when the conbini you're in has a change machine at the teller. So they just put the bank note in and it dispenses whatever the change amount is, even if many coins also come out.