YSK: If there is an employee at a restaurant/business that bends the rules for you, don't tell other employees/staff about it because the usual employee isn't there or can't help you.
from /r/YouShouldKnow
YSK：如果餐廳/企業有員工爲你違規，不要因爲平時員工不在或幫不了你而告訴其他員工/員工。