We had booked a Vegas package through Travelocity and our rental was from Thrifty. They share their counter with Dollar and you can use either one to get help.
We had a wild card to pick any of the compact in the lot. B. was the driver so he got to pick what he wanted. He liked the silver Toyota Corolla and seemed to like it fine.
Car was dirty on the inside - sticky seatbelt and I found 2 empty soda bottles under the passenger front seat! Dirty on the outside with sticky stuff - but we noted it on the paper before leaving.
Don't do the prepay for gas, she was going to charge us $45, but we found gas way cheaper only $24 at Rebel Gas near the return lot. You can find cheaper gas within 10miles and it's easy to get to before returning the car. Save your Receipt.