List of attending memebers home towns and state/province. People will be asking questions for years...
I don't mean to sound like I don't like this idea, but remember, it's going to be embroidered (if we are going with polo shirts). All that information is going to be bulky on the shirt not to mention it's going to drive up the cost. On a t-shirt, this would look great!
I've been out of the loop here...I don't get "negative orange".