How do I return my rental car after hours at the SeaTac Rental Car Facility, and what are the procedures for using the SIXT key drop box?

Detailed answer

The SeaTac Rental Car Facility is open 24 hours for returns. To return your rental car after hours, proceed to the designated key drop box area located at 18200 International Blvd, SeaTac, WA 98188. The SIXT key drop box is available for after-hours returns. To use it, follow these steps: 1) Park your rental car in the designated area. 2) Turn off the engine and engage the parking brake. 3) Place the keys in the provided envelope and seal it. 4) Insert the envelope into the SIXT key drop box. 5) Ensure the key drop box is locked properly. The facility is monitored 24/7, and returns are processed within 2 hours of receipt. A late return fee may be applied if the vehicle is returned after the agreed-upon return time, which is typically by 11:59 PM on the due date. For example, if your rental agreement is due on a Friday, you can return the vehicle until 11:59 PM on that day without incurring an additional day's rental fee.