The Children's Museum at Naju National Museum is primarily designed for ages six through lower elementary school, but individual visitors do not need advance reservations. Children aged five or younger require special attention, and all children must enter with an adult guardian. Group admissions require online advance booking and are limited to elementary grade 3 or below. The museum lists five group admission sessions a day, with 80 places per session, and no group bookings on weekends or public holidays. Recommended adult-supervision ratios are one leader per seven preschoolers, or at least one per ten elementary pupils. Once booked, groups are asked to reconfirm on 061-330-7878 or 061-330-7879 and verify their reservation at the desk. Without prior notice, late groups may lose priority to those waiting. Children's museum hours are 10:00–12:00 (last entry 11:30) and 13:00–17:30 (last entry 17:00), with Monday closures. Even individual admission can be restricted during crowding.