I think the card is called Travellex. You put your money into the account and it converts it into Euro (or whatever currency you're using) with exchange rate that is happening when you put the money in. So if you did it today, you'd get today's exchange rate. Then you use the card as an eftpos card. I'm not sure if/what fees are attached though but it's usually better than the bank and it's great to secure a good exchange rate. Ask your travel agent, they'll know the ins and outs of it.