Review for Newcastle Harness Racing Club Review For DiamondJacks Casino & Resort Google User Jan 14 '18 at 13:42 This is the DiamondJacks in Louisiana. They don't seem to put much money back into the casino. I played penny slots. The first 4 to 5 machines wouldn't take my card. The next 4 to 5 machines didn't want my money. Go figure. When you have a problem with your machine they send a service tech over....about 15 to 20 minutes later. Save your time money and patience, go to one of the many casinos in Oklahoma instead! View full site to comment or like