Air New Zealand took us out of the plain to Cook Islands because we did not have a flight out of Auckland. I checked everywhere. This requirement is not mentioned anywhere. Cook Island gov clearly say just onward travel is needed. There is much more to the story where they failed. Lets see how this ends. Will probably lose quite some money. We are very angry but all right. Finally got ourselves a hotel at 02:00 local (05:00 Montréal). No booked a fully refundable flight Auckland-Sidney Quantas for just 1300 CHF. Any such reqirement is useless.