You know that old saying about when a butterfly flutters a wing, the entire universe is changed forever?
Your family has been altered by whatever you have been doing. And your children know about it.
One of the bad things that happens to children who grow up in addicted families is that they learn to shove their feelings down deep and soldier on, and they pay later in serious ways.
You are very certain that they are unaffected. I am just about as certain that they are affected deeply and need you to be up front and possibly offer them an outside counselor. I'm basing this on my own experience.
There's no way that you can be attending nightly AA meetings and also maintaining that your children are unaffected by whatever made nightly meetings necessary.