Camping in Japan

Chris from New Zealand will be travelling to Japan in mid-March for a long-awaited two-month-long honeymoon. Most campgrounds seem to require reservations up to 14 days prior, so Chris asks: Do you have any experience with booking accommodation like this? "I don't think I've never heard of this problem before," says the guide. The Shahla Bambak and the next one as well is on our regular time - Sunday at 9am GMT.