Originally Posted by Presguy

Las Vegas is an "Ultimate Choice" location, so you choose your own car.

As long as you have an intermediate or higher reservation (which you now do), when you arrive, your name will be on the board, and will say "Gold" "5 star" or "PC". You head to that section, and pick out a car yourself. You can also choose from any "lower" section; for instance, if you're a 5-star, you could also choose a car out of Gold without any extra steps.

On the very off chance you don't see a full size availabe, you can ask at the desk and they'll direct you to a specific space for one.

They'll also have a row of paid upgrades (very often Infinitis) available for $25 or $35 a day, depending on your status. If you take one of those, the rate will automatically be changed at the exit gate.

Two more thoughts: if this is your very first rental as a Hertz Gold, you'll have to go to the desk so they can check your drivers license, credit card, etc. When you arrive, your name either wont be on the board, or it'll direct you to the desk.

If you're expecting a complimentary upgrade on the basis of status, you probably shouldn't hold your breath for anything great. While it's theoretically possible you'll find something nice on the aisle, it's more likely you'll just have the chance to pick an "F6" (fullsize + leather), or some kind of crossover/SUV, and that will count as your "upgrade".