Stopped by Cache Creek yesterday on a valley sweep from Thunder Valley.
Had a $15 postcard bonus from a couple visits the month before. Would
have been 2X Tuesday thru Friday or $30. Have NO idea why they exclude
Mondays.
Single line $1.00 9/6 DDB in North casino, maybe about 8 machines a
couple rows in from slot tournament banks near hotel entrance. Before
that, 9/6 was only on triple play dollar machines against wall next to
entrance in high limit area. Other standard VP games on the same
machines appear to have similar payback percentages. Other than River
Rock in the beautiful Alexander Valley, I haven't seen DDB 9/6 on
single line machines at ANY indian casinos until these.
There are DDB multiplay 9-5 20 or 25 cent DDB on several banks in
casino including All Star machines. No progressives worth playing
unless you want to play 7/5 or 6/5 -- fugget it unless the jackpot is
in the stratosphere, not likely.
The buffet is pretty darn good, comparable to Thunder Valley but
pricier. Ask for the senior discount if you qualify or look old
enough 
Good upscale Chinese food near the east entrance.
All-in-all, IMHO, if you play $.25 machines, its a better VP value to
spend $30 more on fuel and go to Reno or even Harveys at Southshore.
Just takes a few hours play of flushes and full houses to pay back the
fuel costs. Car pool is a good idea to increase ROI, try Craigslist or
talk to others and exchange emails at the casinos, might make a friend
too.