Hi, Wendy!
I used to go out of my way to make it easy for my husband to spend time with our son. I would rearrange my schedule, cancel plans, drive out of my way, etc...
I want them to have a good relationship. I want them to spend quality time together and have fun.
But their relationship isn't my responsibility, and I don't think that Chris's relationship with Ryan is your responsibility.
Chris is a grown man. He made a decision to continue to drink and behave in ways that were incompatible with your relationship, and those choices led him to walk away from you and your son.
If Chris loves Ryan and wants to see him, he can find other, non-dangerous ways of spending time. He can ask Ryan if he'd like to hang out, and he can ask you if that would be alright.
You're just saying that hunting is not alright.
There are other alternatives, but it is not your job to explore those alternatives.
It is Chris's job.
If he chooses not to - it is your job to offer support and love to Ryan.
Good luck.
-TC