Event Planning Showcases Q- Why should I go to a showcase? By Long Island Press Posted on June 30, 2011 Sign up for our LI Press email newsletter to get news, updates, and local insights delivered straight to your inbox! A- A showcase is a great way to see all different types of vendors in one night and under one roof. You will have time to speak with many vendors from each category; this will help you to figure out who you would like to schedule appointments with.