They are hot-bunking; living in crouded room. They take very little home for working many hours a week.
If you had a rich kid, who didn't need to net much money, they might work in Nantucket -- but they'd be working their asses off like the rest of the Estonian or Russian students.
Nantucket is where the billionaires displaced the millionaires ;^)
BUt I don't think of it at touristy -- it really isn't that tourist friendly at those prices. It's a lot less friendly than Vail on a January weekend. :^)