Welcome Griswold!
I too knew my AH had a drinking problem when we got married 7 years ago... I too thought it would get better when we got married, when we bought a house, when we had kids. Alcoholism is cunning and baffling... it's sneaky and deceptive... and it messes with everyone who comes into contact with it.
Stay or go - divorce or don't divorce... drink with them or don't drink with them...
there are sooo many decisions and questions that we are faced with when living with/loving an alcoholic. Al-anon helps me get to a stable healthy place where I can calmly face those questions and find answers. I'm glad you are going to give it a try - make sure you do it for the person that matters - YOU.
Please keep coming back!
Shannon