How do I return my National rental car after hours at the SeaTac Rental Car Facility?

When returning your National rental vehicle after hours at the SeaTac Rental Car Facility, located at 3150 S 160th Street, it is crucial to follow the specific logistics protocols to avoid additional fees. Upon entering the facility garage, drive to the designated National rental return floor. You must park your vehicle in one of the marked stalls and pull the car all the way forward to ensure the vehicle does not obstruct the driving aisle or prevent other customers from parking. Before exiting the vehicle, thoroughly check the cabin, trunk, and glovebox to remove all personal items, including electronics, luggage, and toll transponders. The facility is not responsible for items left behind. After ensuring the car is empty, lock all doors. Proceed to the National rental counter area on the same floor. You will find the secure National after-hours key drop box mounted on the wall near the counter. Insert your keys into the slot; no envelope is required. Your rental contract will be automatically closed the following business day when the lot opens at 6:00 AM, and you will be billed for any additional charges, such as a late return fee if the vehicle is returned more than 29 minutes past your scheduled return time.