Drop a trans-Tasman flight?
I thought they were limited to flights into SYD, MEL, BRS, PER and if some of those flights go to AKL or CHC they still count to the total.
I have heard lots of speculation that EK do not earn money on these flights but save money by not having parking fees in OZ on that they gain quite a lot of revenue from freight, which will likely increase due to NZ and QF reducing capacity on these routes.
Anyway from memory ADL and DRW are not limited.