I have it in my divorce decree that my X cannot drink around my children. He agreed to have it put in. Wish I would have known about Soberlink then, but I did not. The consequence is that my DD who is 11 (17 year old does not go to his house anymore), is a sober monitor. It has caused tons of stress for her, and for all of us.
Push, and push hard, to keep it in. Pay for it yourself if that's an issue, it will be worth every penny.
Hugs. Let us know how it goes.