You can't trust an active alcoholic. I have one big suggestion. DO NOT LET HIM HAVE THE CHILDREN IN THE CAR!!!!!!!!! Hopefully he will get caught while driving drunk before he kills someone and you sure don't want your children to be causalties.

You didn't say how old your children are but they already know what's going on. You can't hide his addictions from them. If you are afraid of him they sense it.

It's too bad he has chronic illnesses and needs surgeries, but that is no reason to live and put up with his drinking and taking drugs and also live in fear. You are not doing your children any favors by keeping them in this atmosphere where it looks like doing drugs and getting drunk is an okay way to live. Children learn by watching their parents. Do you like the lessons they are learning? Take what you like and leave the rest.