Hey so I visited the Spirit Mountain casino in Grand Ronde, Ore. over the weekend. Contrary to what the database says, there is 9-6 DDB in .25, .50, $1 and $2, but only in the non-smoking room (which is ideal for me). There is .0125 cash back in form of free play most days, cash on some days.
See the picture for the 4 Aces w/kicker jackpot I won to confirm pay table.
This casino was a 3-hour, 55-minute drive from Seattle with virtually no traffic, but up to 5 hours when traffic is bad. It's 60 to 90 minutes from Portland.
The only downside is the lack of slant-top machines. These machines were the newer upright models with the big buttons, and they were on the verge of actually being painful to play. I guess that's one way to keep people off the machines!
Oh and you can't drink alcohol on casino floot. How weird ...