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：如果餐厅/企业有员工为你违规，不要因为平时员工不在或帮不了你而告诉其他员工/员工。