Just another point. Someone has said earlier that we don't have forced rehab here - we do have rehab that can take place via interventions from family, friends and the place. I know of one in SA (haven't looked any further afield) - none in WA that i know of.
When I looked at the site of this place, they basically said that the outcome (in terms of how sober a person stayed) was dependent upon their frame of mind upon discharge, not upon entry. So theoretically, if a person went in not in their "acceptance" frame of mind, they still stand the same chance of rehabilitation as someone who has entered rehab off their own choice.