There is not a law in Tennesse stating that you have to see an ID to
serve someone a drink in a restaurant or bar. The law states you may
not serve someone who is not at least 21 years of age. If you would not
bet one thousand of your dollars that the person getting the drink is 21 or older, you need to see a government issued photo ID.
If it's a setup by the TBAC or the cops you can expect a minimum fine
of a thousand bucks. Your money, not the restaraunt's money... not the
doorman's money: YO' MONEY!