What harm can three more nights do?? Could be a lot of harm, depending if you're driving or get into an accident, either driving or riding with someone else. All the really bad things that haven't happened to you YET can happen at any time. I tried to control my drinking but never could. And now I do'nt drink at all and don't have to worry about what I did or said or where I went and with whom. All those "yet"s can happen to you.
I wish you the best, and welcome to our family!