Lesley and I spent a couple weeks on the North island in 2016, for a speaking engagement. Beautiful country. Great people. Got a good tour. Apiaries all over the island. Bee trucks on the highway. Thoroughly enjoyed our time.
Neither of us are bungee jumpers or maintain climbers. More into quieter distractions. One beekeeper and his father took us trout fishing. Wow, the Rainbows are large and plentiful. All catch and release. Lesley still can't wipe the smile.
One of the most outstanding things...Frank L took me to a farm north of Wellington, where he keeps and apiary. We arrived after dark, and the farmer took us down a forest path...Down by a small stream, with a tall, 20 foot vertical bank at stream's edge. Eels swimming up the stream. Sat on the farmer's bench, in the dark, and ...covering the bank was an amazing array of Glow Worms! Thousands! Our own private viewing of something most never get to see.
So, just be sure to see the natural wonders of New Zealand.