If you contact our Customer Support team in advance, we might be able to modify your booking so that you can pick up the rental earlier than originally agreed. If you do not contact us and instead go directly to the car rental provider, you might find that the car is not yet available, that the rental office is closed, or that they’re busy with another customer who was scheduled to come in before you. For these reasons, you might have to wait until the original pick-up time.