There may be fees associated with this type of rental. You should check with your car rental company to determine if the options offered meet your needs. Using a credit card is the most reliable method to insure that your pick up proceeds smoothly. Different locations, within the same company, have different policies concerning payment. Some locations accept cash, checks, Travellers checks, money orders, or Travel Agent vouchers.
Many locations still require a credit card regardless of the payment selection.
As always, the best way to be prepared for your pick up, is to call the actual location that you will be picking the vehicle up at. You will need to have a valid driver's license and a valid credit card in the renter's name. A valid international driver' s license may be required, in addition to your regular driver's license. If you are on government or corporate business you will need an id to validate this as well. If you have a coupon or discount you should have it at the time of pick up.