Mike,
I didn't go by myself, I came with my girlfriend. But had she not come along, I'd had have felt similarly to you. And I can get shy and clam up in social settings where I don't know people.
I'll be honest, at first it seemed as if everyone already knew everyone except for me. And maybe they did (unlikely). But then I realized it didn't matter because every single person I met was there to game and have a good time, and it didn't matter who you were.
I was supposed to run a game on Sunday but, unfortunately, I didn't get enough players at my table. A bit bored, I ended up saying "hello" to a guy who was just poking around on his tablet at one of the tables. That "hello" turned into a 90 minute conversation. From that conversation, I learned that he has written for the Rifter, he gave me some great campaign ideas, and some none-game stuff... and was just an overall very interesting guy to talk to who I otherwise would probably never met/conversed with in every day life.
So if/when there's another Open House, I hope you'll consider coming even if it means coming alone.
![Smile :-)](./images/smilies/icon_smile.gif)