Hi All. I made a booking for car hire with Thrifty Ayers Rock and the confirmation says that apart from paying for the rental fee on car pick up - I also need to provide a $200 credit card deposit bond on pick up of the car which I understand. My question is do they just do a pre authorisation on my card and reserve the funds but do not charge my account . (like at hotel check in) and when I return the car they then calc the kms used and then charge the actual amount OR do they charge / debit my credit card $200 on car pick up and then do a refund less kms used on my credit card when I return the car. I have tried to ask them by email but its answered by a centre overseas and the answer is unclear. Thanks