Auckland has a indoor ski field that runs year round, but the Ruapehu and the South Island fields won't open until late June.
On the topic of the board, DC with kind enough to send me out a demo of the 153.75 Ply. I tried it out at our indoor hill on man made snow, which doesn't give you the best indication of how it will handle all Mountain conditions, but gives you a good idea, especially in terms of jibbing etc.
I found to do be extremely stable on boxes and jump take-off/landing. Great ollie pop, I found edge hold a little difficult until I got used to the strange camber profile. I personally really enjoyed it, it really fitted with my personal riding style.