Parking is situated down stairs in Arrivals. It is sign posted as Car Rental Returns. Sixt Rent a Car has a dedicated 24/7 operation in the parking area which will assist customers at time of check in. The check out counter is conveniently situated in the Arrivals hall in Dubai Airport Terminal 3. Sixt UAE accept all major credit cards. No debit cards are allowed. There is no drop box as this office is staffed 24/7