Thanks for the support and information--I have renewed faith that my partner will be happy I'm willing to try something new and redouble my efforts. I guess, at the end of the day, I kind of have to have that faith and just move my focus quickly to the staying sober part.
P.S. I didn't mean to make a generalized statement or come off as derisive toward ERs/hospitals, or detox/rehab programs (which I have zero experience with). I've just had a few bad and weird experiences in the past two years.