You must drive within all of the conditions listed on your driver licence, and drive according to New Zealand's traffic laws.
If you don't you could incur penalties such as fines and demerit points. You could even have your licence suspended, or be disqualified from driving.
The alcohol interlock programme
Licence holders who have been given an alcohol interlock sentence will be required to take part in an alcohol interlock programme if they wish to drive.
From 10 September 2012, two additional sentencing options became available to the courts when dealing with repeat or first time high-end drink-drivers: alcohol interlock and zero alcohol sentences. These are in addition to the two existing options: set period disqualifications and indefinite disqualifications