Better yet, if you get a Harrah's or Showboat players slot card (they are free) you can use that card for free parking at both properties and Harrah's will give you a receipt upon request after presenting your card upon exiting their garage which can be used once at any other property in town for free parking. If you get a Trump players card, I believe that it might give you free parking at all three Trump properties. I do know that Trump Marina offers free parking with the Trump One players card.