We did one day in Rotorua when my family was in town. We did the Zorb and Luge - both were a LOT of fun. Zorb is a bit pricy, but the Luge was a blast - the gondola to the top is included in any of the luge rides that you buy - my OH didn't do the luge, and he came up to the top with us to watch us do the rides.
After the adventure stuff, we went down to the lake and went around that area a bit. Grabbed lunch at the Fat Dog, and then went walking through a small thermal park right off the main road towards the city centre.
We didn't do the hot springs parks, as the kids weren't terribly interested in it, so we wandered through the free area and that was enough for them. It was a great time!
I have some pics & stuff in my blog from that trip, and previously when we were in Rotorua with friends. www.managingimaginarymenageries.wordpress.com
Have a great time!
Visa Applications submitted June 2nd
Work Visas approved June 17th
Arrive in Auckland July 4th