I'm going on a blind-date type thing, do you have any tips?

I'm going bowling this weekend with a friend, her boyfriend, and her boyfriend's cousin. It's kind of a blind date to hook me up with her boyfriend's cousin. I'm pretty nervous, and was wondering if anybody had tips for a first timer to blind dating. Like what or what not to wear, say, do, or any other tips you might have. All suggestions will be appreciated :)I'm going on a blind-date type thing, do you have any tips?
Dress for bowling, and conservatively. Make sure you have an out if necessary...a way to get home, and don't go anywhere alone with the cousin. Use the same common sense you would on any first date, plus a bit of wariness. If you feel uncomfortable at any time don't be afraid to say things aren't working out and excuse yourself. Hopefully your friend has ';checked out'; the cousin, but in case she hasn't you will be prepared to exit gracefully.