You will get out of inpatient treatment what you put into it!! Be sure to investigate what the treatment program is. Last year I went into a treatment center that was near where I live that treats mental illness AND addiction, but everyone was lumped into one group; ie I was in group with males/females with all sorts of disorders and I was the only addict. I found that it was difficult for others to relate to me and me to them. One of the women there was there to have her bipolar meds adjusted and had never had a drink or drug in her life! Our needs just didn't match.
I left this facility after four days and checked into another one a little further from home that treats addictions/alcoholism only. I got a lot out of this program and have been clean for almost a year. I hope this helps you.