At this stage there is literally no chance of NZ and Aus being mostly/fully vaccinated by the end of the year.
How do you measure fully vaccinated? Like Niue at 97%?
Is it more like the UK, that is almost fully open at about 69% popn min 1 dose, and 53% 2 doses (ie fully vaccinated) - from stats I see?
And yes at current vaccination rates, NZ & Aus are both a look way off, whatever measure you use. But the plan (and apparently vaccination orders have been confirmed), is to seriously ramp up vaccination supplies & rates. Then I guess alot will depend on the joe public's motivation to get a jab.
The talk coming out of the Aus Govt, is that it will all be about 'modelling' as to when state borders will just be left open & lockdowns cease. ie at what point will enough folks be vaccinated, that the transmission of Delta or whatever strain is around will be low enough, that hospital admissions/deaths will be basically at an 'acceptable number'. Which is pretty much how any health system operates in a first world country anyway, with or without Covid.