Nifty, I had a 2 year relationship with someone who was an alcoholic. He used to drive DS to school still drunk. I didn't know at the time, DS told me about this and when I did find out, I changed my working hours and did it myself.
My ex used to pick his own daughter up from school while he was drunk, driving her to my place round the M25 during the rush hour.
I've had red wine vomit all over the kitchen. I've had the bathroom in a total mess. I've had drink stolen and the dirty glass put back in the cabinet (after drinking during the night). I've had money and possessions stolen. I've had the disappearances, the phone not being answered, or turned off.
I've had to witness the aggression - and so did my son.
I reached the end of the road after the continual lies upon lies upon lies. When he was off on his Xmas party abroad, I phoned the locksmith (my house) and got the locks changed, packed his things into black plastic sacks, took them to his Dad's place and left a text message on the ex's phone telling him not to come back.
That was 6 years ago. The sense of freedom, the peace, the calmness was amazing. DS and I didn't have the chaos anymore. We had peace of mind.
To this day, I know that my ex hasn't got help - he was very good at paying lip service, but didn't do anything to help himself.
My overwhelming thought at that time, was to protect my DS. I COULD NOT have him growing up in such a situation.
Hope that you're starting to feel a bit better. It's the fear of the unknown which is almost paralysing. But as others have said, just deal with one day at a time. Just look at one day at a time and get through that. When you get yourself into a bit of a routine, then you can start to think ahead a little. The holiday sounds like a good time for you and your DCs to settle down a bit and find yourselves.....