I agree with SadHeart.
Some people are okay with their partner's disease. I am not one of them, but it is because of the attitude that accompanies the drinking. Not because of the drinking itself (although it is causing health issues and all that, but I am talking about relationship-wise).
If the relationship is still good, count your blessings, because it could be so much worse. And you do have time to figure out what to do if it does get worse, which it might, so you don't get stuck without some kind of plan.