In Kentucky it is illegal to drink alcohol in a public place outside of a licensed business. That means that if a person is on a Kentucky lake they cannot be drinking. The law also applies to tubers, jet-skiers, water-skiers, etc.
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Open Container Laws in NashvilleThis means that you can't walk around the city streets, parks, or any other public areas with an open beer, wine, or liquor bottle, even if you're not actively consuming it.