I've read you can go to any bank on AC and get cash on your Visa. Is this cash from your bank account? Or a cash advance on your Visa? Sorry, but I've never done this, and don't want to come home and find out I've got to pay 18.5% interest on money I took out..I'm bringing enough cash/T. cheques I should be fine, but I'd like to feel I've got a backup source just in case..