For a guy so all about the numbers let me throw a few at you.
This 220,000 Asian population represents 9% of the Las Vegas metropolitan area population.
The national number is about 7%. So the Asian population in Vegas is slightly higher than the national average. I suppose almost every larger city has a slightly higher number than the national average, as Asians gravitate towards cities, with most cities even having a "Chinatown" or Asian area.
So Ok, the Asian population is less that 10%, yet on Dec 23 and 24th, they make up 90% of the casino patronage. That Mr. numbers is what we are talking about.