I should have checked this thread before I left; arrived in Brisbane on the 24th and due to an issue with my AirTrain tickets needed to roam to get the new tickets which were emailed to me.

The $15/500MB roaming pack is very good value and I would have used it had I known about it
The link I got when I arrived roam.2dm.co.nz does not go anywhere

End the end went with Optus $2 days and got served by someone from Christchurch