All visitors to New Zealand must carry a passport that is valid for at least three months beyond the date you intend to leave the country.
Immigration and Visas
Most travellers to New Zealand require a Visa or New Zealand electronic Travel Authority (NZeTA). Visit Immigration New Zealand for details: https://www.www.govt.nz/browse/immigration-and-visas/
New Zealand's main international airports are at Auckland, Wellington and Christchurch.
Arrival into New Zealand
Make sure you've got the right visa and documents when you arrive in NZ. Also check you haven’t got anything that you shouldn't bring into NZ, like honey or fruit.
Every person arriving in New Zealand must complete the arrival card handed out on the aircraft. If you do not correctly fill in you car you can be find or prosecuted http://www.mpi.govt.nz/travel-and-recreation/arriving-in-new-zealand/items-to-declare/resources/#cards
What you can’t bring into NZ
You won’t be allowed to bring in:
• hazardous materials
• endangered species (without a permit)
• weapons (without a permit)
• objectionable publications, including videos and digital images, or
• controlled drugs.
What you must declare
You have to declare:
• food of any kind
• alcohol and tobacco, if it's more than you're allowed to bring in duty-free
• plants or parts of plants (alive or dead)
• animals (alive or dead) or their products
• equipment used with animals
• camping gear, golf clubs and used bicycles
• biological specimens.