Air NZ publish the rules for the various fares
http://www.airnzagent.co.nz/fareadvi...es/default.htm
the one you're looking for is
http://www.airnzagent.co.nz/resource...123-4may09.pdf
which lists all the rules and the various booking classes that this ticket books into. You can then look up the chart for you flyer program and find out how many miles you'll earn for each of the airlines you might want to fly and adjust your plans accordingly.