A black mark for Auckland

Auckland is a final stopping point for a number of leisure ship cruises and it should be, for those disembarking passengers, a highlight.
It is a wholly unsatisfactory situation that apparently the cruise companies which operate the ships consider their duty done when the ship berths. When that happens, passengers booked to fly out of New Zealand are bussed to places like the Ellerslie Racecourse grounds and held there pending departure of their homeward flights. One would have thought there was a great opportunity to give those passengers in the remaining short period of their stay a worthwhile New Zealand experience.
Not so it seems.
Surely this is an issue that cruise companies in conjunction with local tourist operators could better organise