Up to 3 children 3 years old and younger stay free when occupying the parent or guardian's room, using existing bedding. The Japanese Ministry of Health, Labour, and Welfare requires all international visitors to submit their passport number and nationality when registering at any lodging facility (inns, hotels, motels, etc. ). Additionally, lodging proprietors are required to photocopy passports for all registering guests and keep the photocopy on file.