The Gwangju National Museum's group-reservation page lists visiting sessions between 10:00 and 17:00, eight sessions per day, and a nominal capacity of 200 per session. The official page says both 'advance reservation for 10 or more' and '10 or fewer may enter without booking'. These overlap at exactly 10 visitors, so contact 062-570-7050 to clarify. For 11 or more the advance group-booking requirement is clear, while 9 or fewer fall within the unreserved category.
Groups of 200 or more are directed to telephone 062-570-7050. Capacity figures and eligibility thresholds do not indicate how many places are actually free for a chosen day.
The Children's Museum uses a separate booking pathway, so group organizers should check the correct area and reservation calendar rather than assume one booking covers both areas.