<p>Yes, if Temple is what you will definitely attend if accepted then enthusiastically tell them that. I don’t know about the open house, but the admission rep that is personally responsible for you and your region might be there and if you are good at making an impression at a personal level, then going there should also help. Don’t be overbearing but introduce yourself and politely ask he/she about your waiting list status, anything you can do to provide more information to enhance your chance, etc… Then email he/she a short email a few days later, thanking he/she for holding the open house and talking to you about the opportunity.</p>