The General Registrar for marriages at the NZ Department of Internal Affairs has announced couples should be made aware that the fee will be changing for marriage/civil union licences and certificates on 22 May 2017.
Other than the fee change the process for your application stays the same. Read info here: https://www.govt.nz/browse/family-and-whanau/getting-married/get-a-marriage-licence/#how-you-apply