Canyoning New Zealand operate several canyoning trips that depart from Queenstown. These include half- and full-day trips from Queenstown and they also run full-day trips departing from Wanaka.
The Kawarau half-day canyoning trip in the Gibbston Valley is a good introduction to canyoning and it gives you the opportunity to participate in everything that is great about canyoning including climbing, hiking, sliding down natural water slides and abseiling through waterfalls.
The Black Spur full-day canyoning trip starts with a water taxi ride across Lake Wakatipu (it is accessible only by boat) followed by a 45-minute walk and offers a full day experience including abseiling, climbing and a jump into water. This is a more scenic option with stunning views of the Remarkables. If you prefer not to start this excursion with the 45-minute walk, there is the option to helicopter in right to the start of the canyoning experience.
In either case you will get wet so it is best to wear shorts and definitely avoid wearing anything that doesn’t dry quickly (no denim).