Can’t recall seeing many teens/high schoolers in these places except in small boonies, maybe it’s still an after school thing. But daytime I’ve seen more foreigners than ever before (city) are taking these jobs, which in some locales this is encouraged and required.
Restaurants work on very tight margins. Aside from food costs, operating expenses are thru the roof. One has to be lucky to have either low rent, taxes and plenty volume just to crack 10% profit.
Employee turnover is always a problem too, no matter what the pay is. The professional freeloader will work for a month or two and get fired for whatever reasons and go on to collect unemployment which is never verified by the state. Businesses wind up paying higher premium because of the states lenient unemployment benefit.
here in my area, yes, many HIgh Schoolers working either nightly, or after school, or on the weekends.
yes too, many foreigners as well, and then too, many do move up to management. one gal, i am familiar with, started at the counter, taking orders, then moved to take out window, shift supervisor, assistant manager, now manager.
so some do make it a career. it's a micky d's, so they put her thru schooling....and has all sorts of benefits...she does not however, want to be a franchise owner.
i seen her grow from single, to married, to pregnant, working her butt off with child......
i cannot say for sure what country she is from, but i suspect Guatemala....
and many teens work there, mostly if not all....from other countries.