I am down here at Wanaka at the moment and its actually the busiest uncontrolled airport in NZ. There are a lot of heli maintenance ops here as well as operators.
Alpine Helicopters
Helisupport
Helicraft
Wanaka Helicopters
We did a quick air to air shoot yesterday and when we were coming back in I counted a total of 19 helicopters parked out the front of various hangars, as well as quite a few coming and going from the various main shops.