Welcome to SR. Hope you have read lots of posts to see what others have gone through. Are you having a big wedding or might it be easy to postpone????
Sometimes it takes lots of trys before they can stay sober. Always exceptions, but most do have trouble.
One plus is that he has walked through the doors of AA.
I just wanted to say welcome and just wish you had time for lots of reading, and Al-Anon meetings. Best to you both clancy46