We had about 25 people for the meetup in June! @Bitkiwi1 is your man for meetups now, he's doing them consistently throughout the year around the country. The next one is this month in Wellington.
Nothing stopping Tamaki Makaurau and Aotearoa from being ready for Bitcoin! @Lawblock21's firm is already accepting Bitcoin :)
It will have to be a grassroots movement. No one can stop us using it amongst ourselves, and we don't need anyone's permission to use it!