Great advice already given so I don't have much to add other than to pile on.
The big perspective is that if you think you have a problem, solving it, meaning not drinking, is far more important than caring about people think. As somebody upthread already mentioned if that's the worst of the fall out then it's a non issue. And if you want to get more assertive and state that you're not drinking for whatever reason, including the truth, those that are you true friends will support, possibly with a little pushback at first, but once you get past the initial "wave" you will be fine.
Main message is, "Don't care about what other people think."