Originally Posted by NM

As far as I can remember, this is only an issue for OWE issued in SWP. And the rule is that you can only have one international departure and one international arrival from/to the country of origin. And since Australia and NZ are still technically two different countries, you can start in Australia, fly to NZ and back to Australia. Similarly you can't start in NZ, fly to Australia and back to NZ.

So for OWE purchased in SWP, you can only cross the Tasman once. But if purchased in any other continent, no problem. You can cross as many times as your sectors allow, including purchasing additional sectors.