Hi All :cool
The Kiwis have a frequent buyer program here called "Fly Buys".
Every time you buy something at a participating store you can give them your Fly Buy card and receive points toward airfare and many other rewards.
When you move you will end up spending a good deal of money on many things...the points add up fast and it's free to join.
We didn't join right away and missed out on a lot of points, so I'd sign up as soon as you arrive and/or have a NZ address.
Here's their website:
http://www.flybuys.co.nz/default.asp
Just a little thing that can add to your move!