Vantaggi
You get your foot in the door when it comes to retail sales and/or the food service industries. There's a lot of flexibility when it comes to your work schedule, be it for sheer desire, to work around school or even a second job. Management is overall pretty great when you get to know them. Coworkers eventually become a sort of misfit family, and makes work a lot more fun. Regulars also become an extended family.
Svantaggi
Labor hours/dollars are always being cut, so unless you're in management, don't expect it to be a full-time job. 20-25 hours is pretty typical for non-management personnel. Wage progression is there, but it takes forever. You'll usually have to put in 5+ years before you get to a wage that you could /almost/ live on. You'll always have to work around the holidays. Aging technology and facilities can sometimes make your job difficult or cumbersome to complete. Production rate is valued over employee safety.