These gatherings are numerous and usually rotate around the main events on the kiwi and aussie calanders, such as ANZAC Day, Xmas Eve, New Years Eve, etc.
Although they are advertised as Kiwi/Aussie Events, people from all warps of life and nationalities are drawn there to help them celebrate.
Be warned, these events are not for the people who want a quiet night to catch up with old mates, there is plenty of drunken partying going on.
Live Kiwi/Aussie bands usually play at the venues, and if it's outdoors there's usually a B-B-Q and plenty of sausage sandwiches to go around.