Originally Posted by
OrangeTM
Hello 88Lance:
I hope you and your partner can be together for a long time. However, just in case you guys split during the time of applying for partnership based Resident Visa, you need to inform INZ as soon as possible to avoid further investigation; and yes, you might need to back to US because you need to obtain a valid visa all the time in NZ, or you can apply for a temporary Visa, like Work or Student Visa.
If everything goes well, you and your partner enjoy the new life, the next step is applying for Partnership Resident Visa under Family Category. Once your resident visa granted, you can stay in NZ permanently, and you need to live in NZ at least half year (around 184 days) for 2 years, then change your Resident Visa into a Permanent Resident Visa (formerly called Returning Resident Visa), which allows you travel between NZ and US anytime without any time and place limitations, put simply, you can back to US as long as you want, and come to NZ whenever you like.
Hope this might answer your questions.