With old people the only other option is death. They mostly play the penny machines, which if betting enough, can give big payoff's. The also like the cheaper buffets. Valley View (SD) has the best buffet by far.
Asian's are big on any kind of gambling. They are brought in by the bus loads to Valley View, Harrah's, Pala and all the other San Diego casinos. Some as far away as LA.
Lot of Asians and middle eastern types in Vegas. And older people. The backbone of casinos are the retired people and Asians. Without them, most casinos would fold.
Had a few friends work security at casinos and tell me that special attention is given to blacks and Mexican. Talk more than they actually bet and are sore losers. Asian's being kind of cool, win or lose. Old people are just that, old people.