Hydra is Wellington’s annual larp convention, and runs from March 24 - 26 2017 at Brookfields Scout Camp in Wainuiomata. They’ve got their preliminary schedule up, and it looks good:
Registration is open - log in and click the “register” button in the top right corner, and it will let you indicate your attendance and sign up for food and accommodation. Actual game signup will open next month, once the timetable has had its final juggle.