Originally Posted by Kiwi Flyer
... However it may be difficult to get into the country (unless on NZ or Oz passport) since immigration will want to have evidence of planned departure.
That is a firm requirement, and the ticket will have to be issued prior to arrival in NZ, and the ticket number with the pax to be produced at check-in (most airlines will refuse carriage without proof of onward transportation) as well as at immigration in AKL. Goes smoothly as long as you have the ticket number.