While technically possible to visit New Zealand in 4 days, you can only realistically experience one small region rather than the whole country. A 4-day itinerary would necessitate choosing either the North Island or the South Island. For example, a popular 4-day "South Island Blitz" would focus entirely on Queenstown and Milford Sound, involving a flight directly into Queenstown, a day for adventure sports, a day trip to the Fiordland National Park, and a final day for a winery tour in Central Otago. Attempting to see both Auckland and Queenstown in this timeframe would result in most of your trip being spent in airports. To truly appreciate the landscapes and Maori culture, most experts recommend a minimum of 14 to 21 days; however, a 4-day "sampler" is a viable option for those on a strict schedule coming from nearby Australia.