I'm so sorry that you got off to a bad start.....
Getting drunk makes us all do stupid things we regret....you know that....
Is it possible you're over thinking the whole process? I realize at the beginning its kinda freaky but just relax into it and drink "As you normally do", and I think you thought the pill would instantly get you under control. So why wouldn't you get smashed....you're protected...anyways,...no it doesn't keep us from doing stupid things or getting drunk (look at some of the heinous things i've done 3 months in on TSM...). Anyways, the hope is that over time you will lose interest in alcohol and as you're not getting drunk anymore, you'll stop doing silly things....Then you'll have a few when you want it losing the obsession of alcohol.
But I've seen some cured folk have even gotten drunk since cured,...but remember that even normal people get drunk EVERY NOW AND THEN. So if its a rare day,...I wouldn't worry about it except to say avoid the obvious driving etc, posting on facebook

(sorry couldn;t resist that one),...I imagine if you get sober, your cousin will forgive you and will be mad at other drunk people that are posting on her page.....
OK take care and welcome,.>Jim