1. Valid Passport: Your passport should be valid for at least three months beyond your intended departure date from New Zealand. It should also have at least one blank page for visa endorsement.
2. Visa Application Form: Complete the visa application form accurately and legibly.
3. Passport-sized Photographs: Attach recent passport-sized photographs with a white background. The specific size and quantity may vary, so check the requirements specified by the embassy or consulate.
4. Proof of Travel: Provide a copy of your confirmed round-trip flight tickets or travel itinerary showing your entry and exit dates from New Zealand.
5. Proof of Accommodation: Include a copy of your hotel reservations or details of your accommodation arrangements in New Zealand. This can be in the form of hotel bookings, a letter of invitation if staying with friends or family, or proof of a pre-arranged tour.
6. Travel Health Insurance: It is advisable to have travel health insurance that covers medical expenses, emergency medical treatment, and repatriation. Provide a copy of your insurance policy or a letter from the insurance company.
7. Character and Health Requirements: You may be required to provide a police clearance certificate to demonstrate good character. You may also need to undergo a medical examination or provide a medical certificate depending on the duration and nature of your stay.
8. Additional Documents: Depending on your circumstances and the specific requirements of the embassy or consulate, you may need to provide additional documents, such as a cover letter explaining the purpose of your visit, proof of employment or study, proof of ties to your home country, or evidence of previous travel history.

Tourist visas for New Zealand typically allow a stay of up to 9 months within an 18-month period. However, the exact duration of stay granted to you will be determined by the immigration officer at the port of entry.

The processing time for a tourist visa to New Zealand can vary depending on several factors such as the country from which you are applying and the time of year. Generally, the processing time can range from a few days to several weeks.