Fiordland National Park, a UNESCO World Heritage site, is a magnificent destination best explored over 3-5 days to appreciate its fiords like Milford and Doubtful Sound, and diverse landscapes. While park entry is free, activities such as boat cruises (NZD 80-250+) and hut bookings for multi-day hikes (NZD 40-70+ per night) incur costs. The park is highly accessible by car to main hubs, with most visitors opting for self-drive or guided coach tours to Milford Sound; multi-day hikes often benefit from guided services or require careful solo planning. Seasonal restrictions are significant: summer (Dec-Feb) is peak season for hiking but crowded, winter (Jun-Aug) brings snow and potential road closures but serene beauty, while spring and autumn offer a balance. Visitors should be prepared for unpredictable weather, bring sandfly repellent, and book accommodations and popular activities well in advance, as cell service is limited and fuel stops are scarce beyond Te Anau.