what do daily drinkers who drink heavily develop? {Ans: a high tolerance for alcohol, giving them the ability to hide the behavioral cues that might normally indicate they are intoxicated}at on-site premises, who can be held liable for illegal alcohol sales? {Ans: servers, bartenders, managers, and owners}what are the three types of liability for licensees, employees, and contractors? {Ans: criminal, administrative, and civil}what are safe service guidelines? {Ans: always check ID, match your response to behavioral cues, make as many reasonable efforts as you can, do not back down, call for assistance when necessary, and if in doubt, do not serve}what can be grounds for administrative action to suspend or revoke an ABC license? {Ans: frequent calls for law enforcement assistance at an ABC-licensed premise}how old must an employee be to prepare/serve alcoholic drinks in a bar? {Ans: 21 years of age or older}