I haven't read anything that suggests that anyone in his congo knew he was drunk. He gave a great talk and no one but us is the wiser.
Quitting isn't that easy for some of us. I'm in the same spot as cappytan, I have a few drinks before the meeting, than I go and just sit there playing on my phone. This act alone helps pacify my wife. I don't cause a scene, I smile and wave to people, and go home.
If I could just quit and still have a relationship with my family I would.