Gwangju National Science Museum states that groups of 20 or more may buy ordinary exhibition admission tickets on site on the day without making a separate online reservation. However, the same official page says it handles school, kindergarten and other institutional-group visits by telephone reservation; organisers should call 062-960-6210 rather than assume ordinary walk-in admission covers them. Institutional groups visiting the infant playground must book separately. Educational activities, special experiences and guided programmes may require their own reservations and capacity checks. The museum recommends contacting it ahead of time because several groups may arrive together.
A pre-visit orientation is available for supervisors organising group programmes. No more than five people can join one pre-visit, and they must apply at least one day before arrival, excluding holidays and closed days. Bring a teacher ID or equivalent group-leader documentation. Call 062-960-6210 for exhibition programmes; educational programme enquiries are at 062-960-6232 on Tuesday–Friday between 1 p.m. and 5 p.m.
Packed lunches may be eaten only in designated spaces. The official group page distinguishes the dining area in the Byeolbitnuri building and outdoor spaces; current menu, seating and charges should be confirmed separately. Normal main-hall hours are Tuesday–Sunday 9:30 a.m.–5:30 p.m. and ticket sales end at 4:30 p.m., so leave enough time for group movement.