RileyB: Cheers, guys, will try Harvey Norman and Wharehouse Stationary. Unfortunately the format of what I'm doing is already setup by the event organizers, I'm just taking the photos and printing them. I think they want hard-copies so the customers can get signed copies.
Oblivian: Watch warehouse stationary!
As they are in bed with the Warehouse chances are they did the same as here some years back and ditched their own processing lab in favor of a HP supplied Inkjet offshoot of Snapfish. Cartridges that don't need any calibration or smarts
End result, ink that scratches off the photo paper simply by sliding something on it/it into something.
Harvey Norman is a good bet, as long as its their full Colourchrome lab still (which is serviced and clibrated). The only downside is 1hr prints are often not that easy to come by as it has to be manned and dealt to and lots of people like their 22c 6x4s
Please note all comments are the product of my own brain and don't necessarily represent the position or opinions of my employer, previous employers, colleagues, friends or pets.