I'm feeling pretty low myself. I can see why you don't want to go if you feel won't be able to benefit from being there. I don't blame you for feeling that way.

That said, can you arrive early and let the coordinator know how you are feeling? I think it's perfectly okay to complain about someone who showed up drunk/high. I know everyone has their struggles and I don't judge anyone for getting drunk or high, but I personally think that is disruptive to the group, disrespectful, and unfair to those who want to participate. There is AA and NA for alcoholics and addicts, which that person could go to instead. And there are even general addiction groups that are options for them. (I hope I'm not sounding mean, but that's just how I personally feel.)

The other thing is... you mentioned a girl who gets talked to even though she doesn’t really want to talk. Do you think that maybe she is showing signs of distress, depression, etc that people are picking up on, and that's what they're talking to her? If so, do you think that maybe you are good at hiding your emotions and maybe they don't suspect a thing? Some people wear their emotions on their sleeves, while others do not. I think it is natural for others to want to help someone who is visibly struggling. In that same vein, if they don't "see" much of a struggle or any struggle at all, then they may have no idea.

Am I off base here? I don't mean to be offensive. I'm just trying to figure out why maybe they don't talk to you.

I know I have flat affect and flat vocal tone regardless of mood. My therapist even said that it is extremely difficult to assess my mood unless I am wildly manic. Even my severest depressions she can't pick up on. But that's just my experience.