Congrats on the new job, and good luck to you! I was the head coach or asst coach at Whakapapa for quite a number of years('79-'88), and the Ski School manager in '99. Louisa Muir, a great lady, is the current manager (despite being a snowboarder...
Over all, I spent 11 seasons there. It is the kind of place which, despite it's shortcomings, will get under your skin in a way which will never let you get it out of your system!
The Tongariro National Park is a World Heritage Site, and is a truly remarkable place! It has a great history in the development of skiing in NZ, and you will undoubtedly meet some real old codgers!
The conditions are unlike you will experience anywhere else in the world. From the very best, to the most hideous (these can be on the same day), it is an extremely unforgiving mtn.
But it has it's upside too! The fellow pro's you will work along side will become your brothers and sisters! Whether you ever see them again, or even after a decade, you will have a bond which is unshakable. You will meet people who will become lifelong friends. You will, as a coach, travel to other areas, including the South Island. You will see things which defy description. It really is a most beautiful country.
The living arrangements are fairly spartan, but adequate. The living quarters house the whole staff, the lifties, the instrs, the cat drivers, the patrollers- everybody who does not have their own housing arranged. Meals are served communally, in the staff dining room.
The nearest significant towns are 45 minutes+ away, Taumaranui, Ohakune, Turangi, or Taupo. This is where you'll head on your rare day off, to do any shopping. Do yourself a favor- make really good friends with someone who owns a car!
This is just a quick synopsis of some of your questions. If you want to ask more, just PM me.. I'd be very happy to fill you in further.
Again, best of luck, and have a great time!