Choose free casino play or Reward Credits. What is new about Return Rewards? Earn and redeem at Caesars, Tropicana and Harrah’s Resort. To claim your Return Rewards visit a promotional kiosk at Caesars, Tropicana or Harrah’s Resort. Also, as of June 24, each week you may select free slot play or Reward Credits, dollar for dollar. Return Rewards earned Monday through Sunday will be available the following Thursday, starting June 24. The changes affect your play at Caesars, Tropicana and Harrah’s Resort. Beginning Monday, June 14, several changes will be made to the Return Rewards program in Atlantic City.