I can empathize with service workers. I once was employed as a "formal dining room attendant" at a country club. Duties were remarkably like the assistant waiters on cruise ships....bus tables, set up buffets, pour water, ext. These bourgeoisie country club snobs treated me like a proletariat lowlife. We were paid minimum wage with a strictly no tipping policy.
That experience has made me a much nicer patron toward those handling my food & drinks.