@Jennifer940 No, I couldn't answer that definitively as far as how the law reads, which I imagine varies by state or country. But I see a difference regarding bars and liquor stores in that they are selling the product, and have stringent laws they must follow. So if a bar continues to serve an overly intoxicated customer, rather than cutting him off, they are behaving irresponsibly, putting profit before safety.
That's way different than offering a guest a glass of wine or a beer or gifting them with a bottle of wine just because they've been delightful, or as an "I'm sorry for the inconvenience" because your Wifi went out for a few hours. I wouldn't be concerned about that at all, personally. If you were actually selling alcohol to your guests without a license, or advertised in your listing that you offered it for sale, that would definitely be illegal.
If one of my upholstery clients comes to my studio, a home-based business, and I happen to be having a beer when they arrive and I offer them one, I can't imagine I could be held responsible if that led to an accident. They're paying for their upholstery work, just like guests are paying for accomodation, but the offered drink is just a friendly aside.
Hopefully some other hosts who may be legal eagles can answer.