Are most the characters on Cheers alcoholics?
Especially if they're in that bar every night?
Are any of them "normal" drinkers?
The National Institute on Alcohol Abuse and Alcoholism defines heavy drinking as follows: For men, consuming more than 4 drinks on any day or more than 14 drinks per week. For women, consuming more than 3 drinks on any day or more than 7 drinks per week.share
https://www.niaaa.nih.gov/alcohol-health/overview-alcohol-consumption/moderate-binge-drinking