Thats a pity. Rock and a hard place. Lockdown more or for longer, people dont comply, give up on the lockdown and hope that enough stay safe, and both ways the virus has reasonable access to new hosts. In Sweden, compared to Norway, businesses suffered more despite low levels of lockdown, so even that isnt an easy economic fix up your way. I feel that the outbreak up there will be contained, it will just be a long slow process, perhaps. Hope not
There's multiple factors. Lockdown fatigue/sheer pig-headedness is a thing, but in a city as big as Auckland, there's pockets of the community that public health messaging doesn't reach. For some people day to day living is such a stressful and terrifying thing that there's no time for the bigger picture. And while it may be a small % of the population, in terms of absolute numbers, it's probably a healthy reservoir of potential transmission - and usually among the most financially-strained and time-poor, who can't afford to spend hours waiting for a test or the time to go to a GP, etc.
So I understand the weekend thing - sure, there's a group of people who absolutely know better but they think they're invincible or being treated like pawns by socialist communist totalitarian 5G lizard people - but there's also a huge number of people who just won't understand or won't be able to execute even if they did.