But there are also some places where you can't swipe your card, or you can only use international cards.

Just like in China, 1 0,000% don't have UnionPay cards, and some small shops can't swipe their cards at all, only accept cash.

Therefore, you can use a card to travel to Japan for large expenses, and you only need to exchange a small amount of yen for cash (such as buying water, snacks and small souvenirs).

Please refer to it and hope to adopt it.