Renting a car was very convenient. Although the rental location is not inside the airport, there is a shuttle bus from Christchurch Airport's Gate 4. After calling, it only took about 10 minutes for the shuttle to arrive, which was very convenient. The rental process was quick as long as you completed online check-in in advance. On-site, you only needed to confirm a few details. It was raining heavily that day, and the staff at the rental office kindly drove the car to the front door for us. Our own phone mount was not sticky enough to use, but the staff generously gave us one for free. The overall experience was excellent. Another highlight was the one-way rental. We picked up the car in Christchurch and returned it in Queenstown. The Queenstown branch is near the airport, and during business hours, you can even take a complimentary shuttle back to the airport after returning the car. Overall, the experience was amazing. If you are experienced, self-driving in New Zealand is truly incredible because the best views in NZ are not in the attractions but on the roads. There are many small turn-offs along the way where you can stop temporarily to admire the mountains, snow-capped peaks, lakes, grasslands, and flocks of sheep and cattle.