> countries with large sober populations (majority Muslim countries?)

Closet drinkers. Pay enough money and you can get alcohol everywhere, including booze parties in the midst of Teheran. It has been covered e.g. here: https://www.independent.co.uk/news/world/middle-east/drunk-i...

Reminds me of an Iranian friend I had. We were talking once about weddings in different cultures, and I asked her about Iranian weddings. She laughed and told me that despite the ban on alcohol, every man at an Iranian wedding ended up drunk "somehow".