Make sure you have a drivers license that is at least 2 yrs old or they will make you take the practical and computer test once you get here. It is cheaper for car insurance once you have a NZ license.
We replaced both of ours earlier this year as we moved and now I have to get transcripts from the DMV stating we have had licenses for at least 2 yrs. it has been expensive and frustrating getting hold of the DMV plus they did not answer either email I sent.
Just hate for anyone else to get caught out.