I assume anyone with a Harrah's card will have already received the
email announcement. But just in case you haven't, Harrah's Rincon is
giving 10x reward credits for the entire month of November.
Depending on how you value the Reward Credits it pushes the small
number of "good" machines in the casino into positive expectation. And
it drags even the "mediocre" machines up into "good" territory, since
10x RCs is the equivalent of adding 1% return.
I guess the economy is hitting some of the casinos pretty hard. I
could see doing a couple days of 10x as a routine promotion, but doing
an entire month sounds like the tribe is hitting a pretty rough patch.