Promotion Code must be provided at time of reservation or offer is void. Advance reservations required. Offer is subject to upgrade vehicle availability at time and place of rental. Highest obtainable upgrade is to Full-size class vehicle. Brand and model are not guaranteed. Blackout periods may apply. Minimum rental length is four (4) days. Modifying your reservation may result in a change in your rate and/or invalidate this offer. Rate subject to increase or fees may apply in the event of early / late vehicle returns. Vehicle must be returned to renting location to avoid change in rate or drop charge. Offer not valid on Porsche, Mercedes Benz-AMG or other exotic vehicles. Offer redeemable at participating Thrifty locations in the United States, has no cash value and may not be used with Pre-Pay Rates, Tour Rates, Insurance Replacement Rates, or Hourly Rentals and cannot be combined with any other certificate, voucher, offer or promotion. Age, driver, credit and rental qualifications for the renting location apply and vehicle must be returned to that location. Offer valid for vehicle pick-up on or before August 31, 2015.