This question is a semi-duplicate of SIM card in New Zealand with unlimited internet access, but that was 7 years ago and I would expect the cellular details have changed in that length of time.
For a two-week visit starting July of next year (2020), what are my options as far as getting a SIM for use in NZ? I have a GSM multiband phone that should work fine on the NZ networks. I'll want data more than voice, but both will be factors. Thanks.
EDIT: I reside in the United States, and this is a USA-standard phone, but it's quad-band and should work with the local nets.