Probably shouldn't answer this when I am high but WTF.
Lots of poker bars stocked with the finest hookers, the bathrooms near the bars would have those fancy sitting areas with complementary bowls of coke. The sitting areas would feature chaise lounges so you would have a place to snort your blow off your hookers ass.
I imagine the overal decor and the theme of casino would be that of a high end 19th century opium den.