As I said previously, there are no RTW offices in AKL or TYO. If you want to have AA ticket you in AKL, first try visiting their CTO in TYO. Have your itinerary with you and make sure they know you will be actually buying your ticket in AKL.
If that doesn't work try calling the US RTW desk at +1.800.247.3247. I don't think they handle RTW tickets done in NZ but they should be able to help you get this done.