The Ulsan Museum Children's Museum runs seven daily sessions starting at 09:30, 10:30, 11:30, 13:30, 14:30, 15:30 and 16:30. Capacity is 50 per session including children, guardians and teachers, and entry is free. Make advance reservations through Ulsan MOA between 30 and 3 days ahead. Remaining spaces are released to same-day first-come walk-ins, not phone applicants. Groups of 20+ sign an on-site group commitment form. Missing a reserved session may restrict future use; for same-day cancellations call 052-229-4738.