I'm very new in my sobriety (about 3months) and I can honestly say I wouldn't be sober without AA. The inspiration and example (both good and bad) in the rooms reaffirms my desire to stay sober, offers me a safe space to seek advice on staying sober, a sounding board when I'm struggling and provides an alternative 'use' of my time when I need a distraction. The people I've met have bent over backwards to help me help myself.
I was very sceptical when I went to my first meeting, particularly about the spiritual stuff, but AA is not a church, does not believe in a unified single God. It is a spiritual programme for you to consider and understand in your own way not a religious doctrine you must unquestioningly accept.
As for the questions you ask, I'm currently avoiding 'wet' places and people, but my understanding of wet places is embedded in intent. I wouldn't go to the pub for a drink, even if I intended to stay sober, but I would go to the same pub if I was going for a meal. I meet friends Who drink, but not drinking friends. For this reasoning, I personally avoid non alcoholic beers and ciders for similar reasons. For me to give up the booze took an acceptance I couldn't drink any more, and if I drunk non alcoholic beers, if I'm being honest, it would be as an attempt to hold onto something that was harmful in a hope I can return to it one day which is futile and dangerous to my sobriety.
I was also worried about my social life changing and becoming 'boring'. In reality though pretty much all my social life involved was sitting around getting drunk, which wasn't actually fun or interesting (for me anyway). I'm still discovering who I am and what I enjoy with the time I've now got, but even the exploring is fun (sometimes anyway). I'm better focused and more reliable in the hobbies I did kinda manage to keep going through my drinking and am starting to improve at them so actually my life hasn't felt boring, though of course I'm bored at times.
I hope this makes sense, it's the dark end of a long day. My email is in trust if I can help at all.