Very similar for me. I always thought I was a high-functioning person and that alcoholism was a "by the way" thing. I never drove drunk, never went to work hung over, never let my daughter see me drunk, never let friends see me drunk, etc.
Now that I've been sober well over a year, I find myself rethinking just how "high functioning" was I really? Not as much as I thought. I think now that it was another instance of the AV at work. I was isolating myself in order to hide my drinking. I couldn't give it up.