I think your answer is appropriate.
Further, I would always welcome my child, at a minimum, as an opportunity to demonstrate love, encourage a proper lifestyle, and provide support and guidance to lead a better life.
Now, there would have to be rules. For example, a child struggling with addiction is welcome, just no using immediately before, or during the event. And like you said, keep your hands to yourself.
Thanks, I don’t think any parent ever gives up on their kid, nor should they have to.