The toddler playroom at Naju National Museum is a separate facility from the children's gallery and is limited to preschool children aged seven or below. Children aged eight and older and teenagers cannot accompany the child into the room, and an adult guardian must be present; minors do not qualify as guardians. Advance online booking is mandatory, with walk-in registration possible only if places remain. Capacity is 20 people per session including adults, and one individual applicant may reserve up to four people. Adults may not outnumber children. On weekends and public holidays a family may book only one session per day, and groups can reserve weekdays only. If a booking holder has not arrived 10 minutes after the session starts, waiting visitors take priority. The museum may request proof of family relationship. Its slide is for infants aged at least 24 months, not for guardians. Groups should reconfirm by phone on 061-330-7887. General museum hours are 09:00–18:00 with Monday closure; use the separate playroom calendar for actual slots.