Would you feel any differently if he started socially smoking marijuana a few times a year? (Provided it was legal in your state)
As far as the museum example goes, if he was as terrified and concerned about me going there as the OP is of her husband drinking, then I'd try to determine where this fear was coming from. Maybe something terrible happened to him in a museum and he has some minor PTSD about it and doesn't want me coming to harm there, even if the idea is irrational to me and practically everyone else. That's why we would need to talk about it, discuss it, perhaps even attend counseling if we need to in order to work it out.
Now we would also need to question if this were something that happened about practically everything or if this fear of museums was a very rare request during a long-term marriage and no other requests have ever been turned down. Maybe not going to a museum is a small sacrifice that one could do for the marriage in this particular case, even if it's otherwise ridiculous or unreasonable.
Whatever decision we make about it though needs to be made as a couple. It could just come down to him being angry at an employee there because he got kicked out of the museum and vowed that he would never go there again and doesn't want that decision undermined by his family going there as well. And now it turns out that the employee got fired for a similar altercation with someone else and the museum is fair game again, so now we've decided we can go and everyone's happy.
Okay, so a few things about me. I am a former Muslim. I lived under laws and rules that were oppressive. Everything I was allowed to do was at my ex-husbands pleasure which could always be revoked depending upon mood.
I went against everyone and everything I knew and made my stand on what I decided was right in my own heart, not only where concerned my marriage, but where concerned my position on Islam and extremism and later in life a stand where concerned my religion.
So, I've bucked every tradition and got a price put on my own head to do it, lost family, freinds, community, all for what I believed was right.
Not fun, I've been fighting for what feels like a lifetime or two.
So.. that is my background.
As a result, I would tell my husband my opinion (I am now married to an exceptional Christian man) and then leave him to his own decision whether or not he wanted to do something that was legal..
I'm not in the business of taking away his freedom of choice. When you have to fight for freedom, you see how precious it is for all of us, and seek to protect it for others.
He seeks to protect my freedom, how could I not seek to protect his?
I do think this women needs a bit of counselling... she obviously has worse issues with alcohol than I did with alcohol and pork so your correct they are issues to be resolved and perhaps counselling is a great place to figure it all out.
However, I'm unsure why he needs to be brought into it or make him as responsible for her resolving this issue as she is. He should support her effort to resolve the issue but I cant see trying to force him to change until she does or turn this into some kind of group decision.