Seems that I'll be travelling between Auckland and Wellington pretty regularly now so I'm looking at joining the Koru Club.  However the airline I fly with will be dependent on availability, so it might be that one flight is Jetstar and another is AirNZ.  Is it possible to access Koru Club on the days I will be flying with Jetstar?  The website seems to indicate no, but I think I trust user experiences a bit more at this stage...