Avantages
Decent entry level job with no need for previous experience, opportunity to get promoted or transferred to several different roles if you do a good job (mostly unpaid overtime). Usual overtime is paid but except for extra money and a "thanks" you won't get anything. If you want to over-achieve in your role and therefore get a promotion, expect unpaid overtime because those cannot be justified by the company to enter your payroll.
Inconvénients
Your 15-min break time in the morning and afternoon is timed, your tea break and bathroom break is timed, and at the end of the day your performance might be impacted by having taken a few more minutes of break time. Your manager will ask what did you do with those few minutes. Micromanagement is performed to perfection in this role. People are used and managed like machines. And if you quit they have countless new hires to replace you.