AA is a great place to learn how to get sober, and more importantly, meet sober people.
Because after all, where else are you going to meet sober people? At the bar? At the drug house? Probably not.
If you meet some good quality sober people at the meetings you attend (and I'm sure you will) you will be able to develop a support network. And if you use this network, odds are, you'll be able to stay sober.
Just like SR, except face-to-face.
You need sober friends in order to stay sober. I'm convinced of it. We've had plenty of drinking buddies, but now it's time to develop adult friendships, and learn how to actually bond with people without the aid of drugs or alcohol.
Many drug addicts and alcoholics have very few true friends when they first come in. And after you've stayed sober a while, you won't be hearing much from your old drinking buddies. I can assure you of that.