(((SADWIFE)))
Your pain and anxiety is palpable from here--I am so sorry!!
Perhaps piecing out the situation may help (if he is willing to go).
The "90 days" seems so daunting. . . especially when looking at the "90 day hole." But if the focus is on getting him there for a day and then dealing day after day, maybe you can see that you have more control.
Others know the statistics better than me, but if he is sober, I would think his chances of making it 90 days are exponentially increased.
What if he does a downturn? The staff should (and would) include medical personnel who can adequately monitor his situation. They will want him to be with family if his health is such that death is imminent. . . in that case, I am sure he will either be brought back home to you or to a hospital or other place of your choosing. The staff will be able to help you determine that which can be fixed and that which can't (ie can sobriety affect his length and quality of life).
He is not under a court order. . .they cannot force him to stay there. The "90 days" is what he needs and should have. . . .and should be planned for. ..but his staying 90 days will be a choice that you all make. . . and I think a choice that is easier if looked upon as a choice.
Before my mom went to rehab, my fiance and I went to the facility. I'll tell you, my first thought was very negative. I thought "I can't send mom here." (ie. it wasn't physically nice enough ). I looked long and hard for another facility and through that process I realized that I had it all wrong. What I thought important, really wasn't. For your comfort, perhaps you can go visit the rehab. Talk to the staff; share and explain your concerns. . .expect some discomfort on your part--it is hard and scary--don't let rehab be "the black hole", make it familiar.
Sending all my love to you and hubby!