Chabad will be hosting meals and services; see http://www.facebook.com/event.php?eid=213523355376957
for comprehensive details.
Students are welcome to participate in services and celebrations at Beth Jacob in Kitchener, free of charge. For more information, contact Rabbi Zuckerman at firstname.lastname@example.org.
Are you interested in hosting your own Rosh Hashana dinner? Hillel is willing to subsidize the cost of your meal.
Send an email to hillel@hillelwaterloo for details.