Cutting the alcohol is definitely a regional/cultural thing. Here in the south, we have so many Baptists that dry weddings are pretty common, and as long as you aren’t known for being a big drinker, nobody really gives it much side eye. (On the other hand, if you’re the person who posts drunken party pictures every weekend, yes, people will still expect alcohol! You don’t get to pull the “I’m just being a good Baptist” card.)
On the other hand, growing up in the midwest, a wedding without alcohol would have inherently been viewed as a horrible social faux pas. You didn’t have to serve “good” alcohol, but there had to be alcohol of some sort, lest you be considered a horrible host.