My buddy (33M) is getting married to a girl that our friend group is not in love with.

He loves her though so we support him. We have known for months this was a new years eve wedding. I RSVP’d yes months ago with my wife. Several friends and I operated under the assumption that there would be booze at the wedding, especially considering it is on New Years Eve. Well I found out yesterday that it is a dry wedding, turns out it is because of his Fiance and her family. I asked my wife if she knew this and said no and was pissed. I texted the groom buddy and asked. He confirmed this. I told him this is something you should have told us a long time ago. I told him that Wife and I wouldn’t be going. We want to spend the night drinking. I texted the rest of my friends about this and oh boy, the group chat went off. This led to several more people backing out. This is not how a bunch of us expected to spend New Years Eve. Really the only ones that didn’t back out are the 4 members of our 12 person group that are in the wedding. Groom buddy reached out to me and went off. Pretty much he is now overspending on catering, he is having 20ish less guests show up than planned and this is all last minute. I’ve been called an asshole among other things for “leading the charge” in people not going to the wedding. AITA?