Yeah, I too went to different supermarkets, and never bought just alcohol.
Organic veg. was one of my things, and was super aware of others just buying cheap booze. An alcoholic snob I guess.
When I gave up recently I went to my local small supermarket and the cashier asked "no wine today". He said sorry none of my business but you always buy wine. So much for covering my trail.
Incidentally I said it was New Year, his reply was how long will that last. MMM we shall see.