I am hoping that one or more of the mods will come along and reply to this post in the wonderful way that they have with words.
I am going to answer this as an ACAO. Please forgive my clumsiness and any roughness in my words, I am not attacking you.
You are right to feel these concerns for your children. Please, please listen to yourselves. Never underestimate the damage that living in an alcoholic home can do to children. It is the behaviour of the alcoholic and the behaviour of the person who lives with the alcoholic that does the damage. It is a 50:50 responsibility. You have responsibility towards your children, please accept that responsibility.
I am 44 years old, I lived in an alcoholic home until I was 18, I was damaged, badly damaged. It has taken me 44 years to recognise this and to start on my own journey of recovery.
I feel sad because I know you may find this painful to read but it is the truth.
Please take care of your children.