I only had carry on luggage. I don’t remember. You have to take a shuttle to the rental cars.
If they've been left behind by others, you can snag one. Otherwise there are luggage carts in baggage claim, and often near the air train (monorail) stations
Google map the Hertz location, there is a nice photo of the cart rental right there. So that's a yes! I was there in May and saw it myself. Worst case if sold out, arrive early and bring one back from the terminal. I also saw a couple stray carts left by outbound guests.
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