Trebel Cone is the primary flying site in Wanaka
Cross Country Pilots like the relative lack of airspace issues (compared to Queenstown).
I do like flying over the waterfalls ;)
TC's behind a locked gate in summer.
You'll need one of the local boys to let you in.
Since you want to have a good site introduction, you'll be talking to them anyway :)
Check the VFG, but until you start heading towards Wanaka, there isn't much airspace to deal with.
The primary takeoff is Pub Corner.
There aren't too many landing issues at TC.
The usual XC style stuff applies.
Don't land with livestock.
The primary landing at TC is just beside the road up the mountain.
It slopes gradually away from the mountain which won't be obvious from the air.
(This is especially relevant to hang glider pilots)
The prickly stuff on the side is very prickly. You do not want to land in that stuff (it HURTS). You don't even want your canopy to land in that stuff (rip,tangle).