:) That's great, I hope you enjoy your stay here in NZ. As far as fabric goes, the prices here are pretty steep compared to the US but you can get some lovely Kiwiana Designs and I get some lovely hand dyed fabric from a lady in Auckland who does graduated packs of 6 fat quarters for NZ$10 which is very reasonable compared to other NZ prices and she does some truly beautiful fabrics. I am using quite alot of her stuff in my baltimore. I usually buy off the net and will get you the links to someplaces if you like. I'm sure that if you emailed them, they would be only too happy to arrange something.
Where in NZ were you planning to visit, I might have a few suggestions for places to see if you'd like. You've done a fabulous job on the costumes, so authentic looking and such alot of detail.