Back in the early 2010's, I ran a once-a-month pub quiz for a local charity for a little over two years. I'd attended the quiz as a participant for a good 6-7 years before that and took over from the previous host when he stepped down as he didn't have the time to write the questions any more. Most of the competitors were regulars and had been attending for at least as long as I had (probably longer), so I thought they knew me pretty well. And even if they didn't KNOW I was a teetotaller (I'm sure it came up in conversation with some of them), the fact that at each of these quizzes, whether as host or participant, all they'd ever seen me drink was a pint of coke, I thought that would be enough of a clue.
So when I eventually handed over the reigns to my successor, they had a whip round for a thank you gift and got me.... a big box of cans of Stella. I smiled and thanked them all profusely and went home and gave them to my Dad (who is a big drinker). No harm, no foul.