Giving people an inch never works.. always take it all. EU, UK, US and ZA have this in common with a large enough % of populous to make it problematic as seen elsewhere too.
People disobey traffic rules.. imagine my surprise when spouse told me that she saw people loitering at store(she did restock .. tho we trying to avg every 2weeks.. hard when stores limit 2 per item).
Nzl is an outlier in this respect but I dunno I suspect they will tighten up fast if it isn’t under control. Reality is that they have a small populous and an island x2 which is easily isolated. I reckon the SA crowd will likely be bitching about it there and disobeying rules as is the norm.. the avg Nzl citizen tho is law abiding (they do have drinking issues as is here tho).
They still need to abide by the restrictions and are allowed to drive to go and obtain essentials. They are allowed to drive short distances to seek medical assistance, legal assistance and to engage in other valid essential activities. They are not allowed to drive to an exercising spot, but they may take their bicycle to this exercising spot to exercise with their bicycle.
They also allow parenting plans to be exercised, as long as the travel distance is short which they guide as an hour's drive and as long as the quarantine is shared meaning that the children need to stay between parents and not with other people. All playgrounds are prohibited.
Their social distancing, IIRC, is guided as 2m between people, as long as physical distancing is maintained they seem to be rather okay with their 'level 4' lockdown. They also have the 'buddy system' where two individuals each live alone may socially agree to see each other, but no one else. For them, lockdown is all about maintaining bubbles.
I have seen Kiwis complain about other Kiwis breaking the rules, but those I know there seems to be happy.