Well, as long as you look okay, I don't think they care. I've seen people their first time at the meetings in with T-shirt and jeans. People who have been in the business before like I have tend to wear business casual, but they accept anyone into the meetings who haven't seen them before. They are really awesome people!
Heck, I got introduced to this business from a friend of mine at Family Fun Center after I kicked his butt in DDR. It's an Internet Sales business that I also own a part of which is a lot like Amazon. My head coach in Chicago is letting me crash as his place for the weekend for the tournament and it's only like 3 miles from the hotel. I'm going there for business training as well as the tournament since a motivational speaker will also be in town that weekend. Since I'm not in the Halo half of the tourney, I'll be attending that too.
Remember all the free stuff I brought over that one time? That's from just one company... and I have 750+ other partner stores to offer from my website. I also get paid to use my own products, and when I refer people to the site I sponsor by gaming buy things, I get a cut. Therefore, I am now sponsored! ^_^
Bad news, though. I just got the e-mail back saying he's excited about the potential, but wants to wait and see how things go at this tournament first.

I have, however, been cleared to perhaps try testing the possibility of getting tournaments together since I told him about the draw at the Thanksgiving tournament in Omaha.
I don't know about you guys, but I have dreams of having the Midwest be a heck of a lot more lively for the world of gaming! If I have to take those out of bounds steps to do it, I will!
OSA