Research shows that even partial ostracism is quickly detected, and that lacking information that others in your group seem to have undermines not one but four fundamental human needs: the need for belonging and connection to others, self-esteem, the need for a sense of control and effectiveness, and the need for meaningful work.
Unless the person you are attending the networking event with is going to make your quota for the year, you need a plan on how to attack the event, all while knowing you have a partner in crime on the scene should you need a self esteem pick me up.