Haha I was just there too, a week after you though. Flew into Christchurch on the 21st, then to Queenstown on the 22nd which was an interesting flight, exactly as you noted due to the airport. 2 days snowboarding at Cadrona, had good snowfall, Nevis bungee jump (134m), mountain biked up that mountain that's next to QT, with the gondola going up it, 3 pub crawls as well as just going out, other stuff too, and stayed at a pretty flash backpackers (as flash as a backpackers can get). Was there for a week, then back to Christchurch then back to AUS. Had a blast, awesome place, can't wait to go back