Well... I guess I should share my experience...
Saturday they had an open...meeting house, so I thought it would be a neat opportunity, while nervous I think I didn't come off like a total dolt, and they invited me to come to church the next day (it dawned on me I didn't realize it was Saturday at that moment), expecting a call from my job to start I said I would if work didn't call. No call (turned out it was machine error since it was all done by auto dialer) as a man of his word, I went.
Boy did I stand out, what with my run of the mill clothes (I don't own church clothes) long hair and my general confusion. A lot of people said hello to me, talked to me, I do wonder if the missionaries expected me to show up. They had a lunch afterwards, all in all, I felt it was a nice experience.
I didn't feel watched, which was my real fear. It was draining but not in a bad way.
Well, least I know now not to wear my normal clothes. I do have a suit and all, so I might wear that. I'm actually gunna wear normal clothes on my first time, just to get noticed. I want to talk to as many people as possible. xD But after that, church clothes are what I will wear.