It's systemic to warm climates and resort areas. The desert around Palm Springs is paradigmatic. There are two dominant classes. Well to do un-young Anglos and Hispanics who service them. The middle class is rather thin on the ground.
Correct. The same, btw, is true of Hilton Head Island, SC and, to a lesser extent, Scottsdale, AZ. "Leisure class" Anglos and the poor immigrants who take care of them. Although, in much of Florida and Nevada, you do get the native-born ex-cons and "new start in life" cocktail waitress types as well.