I've had the opposite side of the drinking issue. My city "went wet" 7 years ago. It is illegal to sell or buy alcohol in the rest of the county.
We had a party and invited new neighbors. The party went well in general. We followed our usual practice of having some beer, wine, iced tea, some soft drinks, water, and a signature cocktail for the party (kir royale I believe). (I dont drink coffee and am sensitive having attended a good variety of coffee only events.)
The new neighbors came and after about 15 minutes left without eating or drinking. Odd, but okay, maybe they had someplace to go. The next day I saw the new people and thanked them for joining us. I was told that I should have told them that there would be alcohol served and that it was "not nice to trick us." Trick them? I have seen this couple eat in restaurants that serve alcohol. I know some very strict non-drinkers who won't.
I would never expect a non-drinker to serve me alcohol, but I didn't think I had to warn all my guests that people in my home would have alcohol in it.