Two of your Trader representatives were given a heads up last week during discussions with a senior official from Tourism Victoria.
She asked if traders accepted Union Pay which is a credit card based in China. Chinese tourism to The Queen Victoria Market has apparently doubled in the last 4 years. Chinese tourists can only bring $5,000 to Australia and the rest of their needs must be accommodated through Union Pay. Union Pay say their average transaction is $800 so you would need to make sure you have plenty of boomerangs in stock.
NAB and CBA can offer Union Pay facilities through their system and traders should check with their bank to ensure it is operational on their mobile terminals. In addition, it would be a good idea to arrange counter promotional material for Union Pay.