The standard Milford Sound visit is a day cruise from the wharf. Boats leave throughout the morning, take two hours, and travel the full length of the fjord to where it meets the Tasman Sea before returning. The boat passes Stirling Falls and Bowen Falls, both permanent cascades that drop directly into the water, and often comes close enough to feel the spray. Dolphins are a frequent companion, particularly in the outer fjord, and fur seals haul out on the rocks near the entrance. In summer, rare Fiordland crested penguins are occasionally spotted. Overnight cruises let you stay after the day visitors leave and see the fjord in full silence — genuinely worth the extra cost for anyone who can manage the schedule.
Kayaking is the slower, quieter alternative to the big cruise boats. Small-group guided kayak trips depart from the wharf and allow you to paddle close to the cliff walls, under the waterfalls, and into the stillness at the edges of the fjord. Half-day and full-day options are available; book in advance in summer.
The Milford Track is one of New Zealand's Great Walks — a 53.5 km tramping route from the head of Lake Te Anau through the valleys and passes of Fiordland to emerge at the Milford Sound wharf. It takes four days and requires advance booking through the Department of Conservation. It is one of the finest multi-day walks in the world, but it is not a casual undertaking. The track can only be walked south to north and in one direction.
Above the wharf, the short Key Summit track (about 3 hours return) gives excellent views of the surrounding valleys without requiring full tramping preparation.