Someone told me of a trick they used to stay at Commerce Casino's hotel cheaply.
It's totally legal.
Here you go:
1) Go on Priceline
2) Pick the city of Commerce, CA and the dates you want
3) Click on "Express Deals"
4) It will list several hotels as "Commerce Casino - Cudahy - Pico Rivera"
5) Look under "Hotel Amenities", and pick the only one which says "Casino".
This will book you at the Commerce Casino for a cut-rate price.
The trick here is that you aren't supposed to know which hotel it is, but you do because it's the only hotel in Commerce which has a casino!
As a test, I just looked and the hotel would be $156 on December 20th (after tax), and just $116 after tax using this Priceline trick.
Enjoy!