blakamin:
Cash is always the easiest. And it's not like Melbs is the other side of the planet, so a travel card is probably OTT.
And unless you're doing something dodgy/ or you're seriously clumsy, I can't see how it is less secure than your cards.
Ever since my last overnight trip to NZ (where I found myself without access to an ATM) I only take cash, because I couldn't even get food with my Oz ANZ card via EFTPOS in NZ. At a place on the other side of Welly Airport (I'm talking about you, Spruce Goose)!
Spruce Goose is awesome, but it is not I have never been able to use EFTPOS overseas only ATM and Credit Card, luckily I have Visa Debit as well as a credit card, but I usually take cash as well using the credit card for big purchases and the cash for day to day.