Are you scared to leave the kids home with your W due to drinking?

Because quite honestly, she shouldn't be going out every night in an in house separation. You should be dividing some parenting time. You should be getting out too. Unless her being alone with the kids because of the drinking is a risk, I'd be splitting the nights up where it's her responsibility to be home with the kids and you get to go out, even if it's to a coffee shop to read a book.