At 72 Sumokwon-gil, Jeju City, Halla Arboretum's official visitor guide describes outdoor gardens and walks as open year-round, but explicitly limits outdoor trail visiting to 23:00. The nature learning center, rare-plant gallery and orchid room open 09:00–18:00 from March to November and 09:00–17:00 December to February, closing on Lunar New Year and Chuseok days; management may shut exhibits temporarily. Paid parking uses similar seasonal operating windows, with the first 10 minutes free. Listed passenger-car parking for the first two hours is KRW 500 for compact and KRW 1,000 for small/medium-large, with additional half-hour charges. Discount claimants must show documentation. The operator prohibits pets, cooking, and eating lunchboxes outside designated rest areas, along with smoking and alcohol.