You have to have thier players card and get 30 min play on that card. The first time I parked in that garage, I stayed 3 nights. When I went to get my parking validated at the kiosk by the elevators, they just looked at my Harrah's card and stamped my parking ticket. When we got to our car and drove out to where the parking attendant is, we were worried that we would have to pay for the other 2 nights. Nope....she let us thru..free of charge.
I did play 30 min each night. (my hotel was right across the street)


The second time, I stayed 2 nights, played 30 min each night. Got it validated again..this time they physically swiped my Harrah's card. I got the green light, they stamped it, I left the garage with no charges.

From the Harrahs casino floor, you take an escalator down to the garage level, walk thru a hallway, back up an elevator and that is where the validators are...(next to the elevators to the garage)