How many days is it suitable to travel in Japan?

It depends on where and how you play. We went to Japan with Zhongxin last year and spent six days in Tokyo and Osaka. Generally speaking, there will be more people playing in 6- 15 days. In addition, I personally suggest that there is no need to change too much yen. I think 50000 ~ 10000 is enough, and it may not be used up. I heard so many such words at the airport duty-free shop. Hey, hey, help me buy another xxxxxxx.

I want to spend these tens of thousands of dollars on me.

As I said before, UnionPay cards can be used directly in many places. So there is no need to change too much yen.