We will also go to Hokkaido ourselves in late July. I have a question in booking hotels. My husband and I ,my sons (one is 10 years old & one is 6 years old), 4 persons together, can we book a hotel room : 1 twin room / 1 triple room? Does the hotel policy in Japan accept us to book 1 triple room for 4 persons? Because I saw all the charges are "per person".