Often, to get the best possible care for a loved one, family will spend enormous amounts of money on an expensive, frequently out-of-state rehab center. While there, a client goes through so many wonderful treatments: yoga, tai chi, acupuncture, massage, gourmet meals, swimming, CBT, wolf or adventure therapy (I have seen it!). Then they move back home. And all the wonderful things they were doing are, often, no longer available (or even affordable).
And relapse becomes quite likely.
Realistically, someone who is receiving all this wonderful care seems much less likely to use while they are there - who would when life is suddenly so lovely? It can be a set-up for disappointment: treatment was wonderful but life is suddenly hard again. And the treatment center's support is gone.
Residential rehab can be effective treatment, but before spending tens of thousands of dollars- consider a more local, less expensive place with compassionate staff that works with and allows for a client to make their own decisions and build a support network post-program.
At some point, your loved one will need to make their own decisions anyway. Might as well help them learn how before they leave treatment with 24/7 staff support.