I emailed a query to Thrifty asking about picking up a rental at Reno later than the reservation, and returning it later than the scheduled time. Ref: http://www.flyertalk.com/forum/Forum101/HTML/004289.html

Here is the answer I received today from ReservationInquiries@thrifty.com:

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Thank you for your reply.

In reguards to your question about reserving a car for 10AM pick up and not picking it up until 2pm. The location will hold the vechile for two hours. After the two hours have expired, the reservation will be canceld by the location, unless you have contacted them to let them know that you will be late. Yes your reservation will be counted (cost-wise) from the time you actually pick up the vehicle.

Yes we do offer a 59 minute grace period when dropping off a vehicle, after that, the location may charge by the hour or by the day.

If you require futher assistance, feel free to contact us back, or our GDS/Internet Support Desk at 1-800-527-7075 within the United States and Canada or 1-918-669-2168 outside the United States or Canada, daily from 6am to 11pm (CST). They will be able to best assist you with booking your reservation via our website.
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