Airport Transfers in Queenstown are quick and easy. It's only 15 minutes from the airport to the CBD, and you can catch a taxi or jump on a shuttle bus to get you there. Most hotels have their own free shuttles, so check before booking.
Queenstown Airport Transfers will get you into the CBD within minutes. Shuttle buses should usually be pre-booked before you land, or ordered once you do (there's a freephone handset in the arrivals terminal). Sometimes, though, you'll find that there are spaces on waiting shuttles, and you'll be able to pay on departure. Most hotels, especially the larger ones have their own, free shuttle buses, that run regularly to and from the airport. You don't usually have to book a time for pick-up, as they run throughout the day, just be sure to have your hotel confirmation on you to prove you're their guest! If you're landing very early or late, though, do make sure there's someone to pick you up.