Many thanks Top of Climb and everybody else for all the useful information.
I-ve used the Air NZ lounge in the international terminal before when flying on SQ. It was one of the friendliest lounges I-ve been in and I also liked the food selection, not least of all the scones and cream. The wide range of wines and beers was also impressive.
This will be my first flight on Air New Zealand and I-m looking forward to it.