JuanPabloC

Planning a South Island road trip and I keep getting different advice on how long I need. Some people say two weeks is enough, others say a month is not enough. I want to do the highlights - Queenstown, Milford Sound, Mount Cook, Abel Tasman - without feeling rushed. I have three weeks. Is that realistic? Should I fly into Christchurch and out of Queenstown or do a loop? Any advice on the route and timing from people who have done it would be really helpful.