Urgent: What are the sockets in Japanese hotels? It is urgent. . I will go tomorrow. .

Three holes, both of them. There will be two kinds of plugs in a room. If you just charge laptops, mobile phones, cameras and the like, it's generally no problem. One reason is that the plug of this kind of electrical appliances is an international standard, and the other reason is that the plug standard in Chinese mainland is the same as that in Japan, while the plug standard in Hongkong is a European standard. Of course, the North American standard is another matter. Don't worry, I went there last year without any problems.