One more thought about relationship with fiance

One thing I forgot to say is that on numerous occasions when we have gone out together to places where he doesn’t know many people he has become really, embarrassingly drunk.
Is this what adults accept? Am I wrong in thinking he should deal with his drinking?
Or, is it neither one thing nor another?
If it’s not what I want in a relationship that’s fine isn’t it? That’s my decision and if I’m totally happy with it than that’s good enough. I don’t want to be in a relationship with a drunk. And that’s a great thing.
Thanks for your thoughts on this.