Responsible sell a series of alcohol must know the law and the customers what else my seller servers know?

In addition to knowing the law and understanding customer needs, responsible sellers and servers of alcohol should be trained in recognizing signs of intoxication and how to handle over-serving situations. They should also be familiar with the establishment's policies on responsible service, including checking IDs to verify age, and understanding the potential effects of alcohol on different individuals. Additionally, they should be equipped to promote safe drinking practices and know local resources for transportation options for patrons.