If you've found your ideal ride but don't have the budget to pay upfront, Expedia has got your back. With our Book Now Pay Later option, you'll pay in full on the day you pick up your car in Canadian Rocky Mountain Parks. The rental company will also place a hold on your credit card for the security deposit. Some deals may require you to pay upfront, but don't worry — you'll see this at the time of booking. Whether you're searching for something small and zippy or a van to accommodate the family, Expedia has the keys to your next great adventure.