Differences between Aus and NZ
Those wondering why differences exist between Australian and NZ rules - just look at the media ownership in NZ (or specifically lack of ownership by Newscorpse). What possible incentive would any (particularly labour) state government have to apply any judgement to practicality of risk based outcomes on crew quarantine (manageble when you consider recent WA and NSW Northern Beaches) when any perceived lack of absolute control will result in a media campaign akin to what Victoria saw last year (totally unmanaged - and from the same organisation that actively promotes the "let it rip" brigade)?