They are working hard to expedite the pesky local Kiwi airlines coming in from the south; these local heroes sometimes declare visual from way out ( they being very familiar with NZAA ) hoping to beat your weary long hauls to be first onto the runway. Occasionally NZAA arbitrarily give priority to the QF or Air NZ guys coming from LAX eventhough others are nearer and well ahead.
You are initially told to speed up and then a local hero checks in onto the approach frequency, and before you can say " jack rabbit " you are given a wide turn way off with instructions to slow down. Then when the local hero stuff up his hasty visual turn to base and go around, you are immediately told to make a direct turn to Emrag or Oreso and told to speed it up...or even worse, you are vectored all over the place so that he can come in for a second approach ( that is if he is really visual; the first stuff up was probably because he lied about being fully visual, then he will have to be radar vectored to the localizer ). Well, like anywhere else, local ATC give preferrence to certain people......