Mother of 4 here, too...I used to tutor at school in the mronings and actually had a glass of wine before going. LOL
There were many times I'd drop off the kids at sports practice and not stay with the other mothers because I wanted to be home drinking. I was also the Sunday School superintendant, ran a business, etc etc....yeah, functional.
I know exactly how you feel. I'm happy to hear you went thru with it. I was getting worried when you said maybe after the holidays. Any day is a good day to quit. It is our alcoholic thinking that tries to prolong the drinking a little longer...after the holidays, after this birthday, after groundhog day, after summer pool parties. There is no time like now -this way all these situations can be dealt with the next time sober.
So glad you made the choice and so glad you shared it with your husband.
Wishing you peace and strength.