You are gonna love it there! I went there !an [email protected]
@ for a couple of weeks, and really wished I'd been able to stay longer. Most of the people we ran into were staying 4-6 months.
I didn't have any WW experiences down there, but resources are EVERYWHERE.. For cheap gear, check the bulletin boards at local hostels. People that are leaving try to offload there stuff cheap for extra cash.
as far as non-ww experiences: don't pass up sea kayaking the milford sound. Amazing scenery that is secong to none. Look up Roscoe's Milford Kayaks. They're cheap and have great guides.
also, on the north island, look at the Whanganui river journey. It's a 3-5 day canoe trip through amazing NZ scenery. If you wanna see examples, check out my youtube channel, it's trevorandkristen.
there are both ww and non ww outfitters everywhere, you won't have problems. They're tripping over themselves for business..