rush week advice

Just wondering what advice y'all have for incoming freshman at rush week. I am from out of state and I am worried I will get lost in the crowd without any ties to any of the houses. I am going in with an open mind because I don't really know any specifics about any of the houses. I am also graduating as a junior so I will be a year younger than everyone. I have a 4.0 and have done a lot of community service but I feel like all of the other girls have, too. Any tips for setting myself apart? And will being younger hurt my chances? Thanks!