Hello Omara and Emo, I'm sorry as this is a very difficult situation knowing that other circumstances within the marriage need to be considered, however, it's not a position you want to have to cope with, suffering the consequences of their untoward behaviour.
As Emo has said ALANON provides a great opportunity for you and your family to talk with qualified people regarding your husband's/father's drinking, because at the moment trying to discuss this problem with him will not make any improvement and I say this as I had a drinking problem while I was in depression, now I haven't drunk for over a year.
He may well be charming during the day but eventually, this can be broken, as any celebration during the day may well bring out his changed character, it can't be hidden 24/7.
Rehabilitation may well and truly be helpful for many people, but if they are forced in doing it, then it may well work while they're in there but once they leave, back to the same habit, so it's not a positive solution, we only hoped it would be.
Any medications prescribed, you can't be sure whether or not they had been taken or thrown down the loo, only a blood test would prove this, which I don't think he'd do, so I understand your situation.
If you decide to separate, that doesn't mean the love between the two of you will end, what you are doing is a 'wake up' call, if that's how you want to handle it, but if I can say, and I mean this without any harm to you and if I do I apologise sincerely, but your own behaviour will be affected by this separation, that's why you need to contact a help team.
We really hope you can get back to us, as there is more to discuss.
Geoff.