I've been to NZ twice but never to ride (yet). Have a blast. Looking forward to details on bike rental and the amazing pics. Its a great country with fabulous people. Coolest thing Ive ever seen is the glowworms in the forest (town near Franz Joesph Glacier - forget exactly where) - it was like looking at the stars but they were a feet feet away. Highly recommend all the hostels - meet some crazy cats that way.
Curious if they still fumigate you before you set foot on soil.