Seoul Tourism Organization's official guided-walking-tour booking portal separates individual, group and mobility-assistance reservations. The City Hall tour booking page states applications are generally accepted between five months and five days ahead of the tour, and that a guide's unavailability may cause cancellation. Date-specific availability and wait-list status can change. Some mobility-accessible tours require a companion. Check the actual route, meeting point, duration, language, minimum party size and weather cancellation terms when choosing a slot.