Does rehab work ? What’s the experience like ?

I’m planning to finally get real help for my alcoholism. I’m not trying to trauma dump, just honestly nervous about what inpatient rehab is like if I go away for a few weeks.

I don’t use drugs (aside from weed, which I haven’t touched in almost 4 weeks). My main problem is drinking daily just to fall asleep. I’ve had chronic insomnia for years—like, I literally can’t sleep unless I drink. Once I do, I’m out for 8–14 hours straight. That’s honestly started to scare me—what if one day I don’t wake up?

I know I need help. I’m just wondering what the experience is like inside rehab? Is it structured? Do they give you meds if you need them (especially for insomnia)? I’m not looking to get high or anything, I just want to actually sleep sober. Is that possible?

If anyone’s been through it, I’d really appreciate hearing what to expect. Good or bad. Thanks.