Check these links to be sure on what you can and can’t do when we move to Lvl 3 (if you’re not deemed ‘Essential’ then you can’t do what you’ve described under Lvl 4 restrictions)

https://covid19.govt.nz/alert-system/alert-level-3/#workers-and-businesses

https://www.business.govt.nz/covid-19/workplace-operations-covid-19-alert-levels