DID YOU KNOW : GRATON CASINO’s PAYBACK TO PLAYER PERCENTAGE IS THE you want to lose your money. Or feel like you lost. Loss of money. Not even 1 win. Always lose at Graton. And I’m local. I seen lots of good folks lose their homes ever since this DEVILS PLAYGROUND came into our little town. It’s like we’re living in a Stephen King book. Food court is tolerable. GRATON does not have a good RTP (Return to Player) percentage.