Definitely try other meetings headcase. Groups can vary quite a bit; the same meeting in the same place, but on a different day can have a different group dynamic.
The meetings I've attended have had a decent cross section of people; some members come in suits or other business attire, others come wearing nursing scrubs and there is usually a biker or two with the requisite long hair and long beards. I'm disciplined about my personal appearance and hygiene, but I try to keep an open mind in meetings and focus on the personality and what hope and inspiration members may offer. And I also find value in spending time with people from different walks of life.