Just thought I-d report back and say thanks again for all advice and comments.
I had a great time in NZ and quite good visibility on the flight down to Queenstown the other week.
Check-in at both AKL and ZQN was fast and easy. I was impressed with the domestic lounge at Auckland and also got to enjoy the newly renovated regional lounge at Queenstown, which had just reopened again a couple of days before.