I didn't know that alcoholics weren't just down and outs living out of boxes and asking for money for "coffee" from passersby. I married and had 3 kids, but it wasn't till my late xah drinking hit me in the face, that I saw I had married an A. He never accepted he had a problem, and I was the one who had the problem with it because I was a controller.
Apart from genes and modelling of the drinking seen as kids, there is the often horrid changes in the A where, as my x did....they go from kind, funny, ok drunks (is there such an animal?) to vicious, miserable and unpleasant ones who scare the heck out of their family.
His drinking behavior worries you now, badly enough for you to hunt online for help and to consider ending the relationship.
With these doubts already, why up the danger ante by adding a wedding ring and maybe a child or 2?