Las Vegas FREE 3-Day Economy Hertz Car Rental Offer: Valid on new bookings made by 06/05/22 for travel through 12/15/22. Minimum 3 nights' hotel accommodation at participating MGM Las Vegas resort and roundtrip airfare required. Bookings receive FREE a 3-day Economy Hertz car rental; additional car rental days may be added at additional rate. Age restrictions may apply for car rental. This entire offer is based on availability and can be modified or closed out at any time.