Well. if you really want to know I played several thousand dollars at Graton Casino for the last 5 months. Then I got a 5 dollar bonus FOR APRIL I could not believe what i saw. Then I asked at the Casino Rewards, and the lady told me it happens. I said "After spending over 8500 dollars, and making 77500 points" All the lady at the window did was stare at me for a few seconds and then said "That's it"
Oh and don't forget the Buffalo slots, when you get the free spin bonus with three coins, and then hit another two coin during the free play the additional spins are all blanks. over and over again, on any and every Buffalo Slot machine!