Option 1: to ensure that they recognise you as hip, cool and all that, wear a hoodie (hood up), your baggiest jeans and a grungy haircut, ensure chin etc. covered with week-old stubble. Pop some D+B on your iPod and keep it on through the presentation. Party til 0300, and arrive 3 mins after the time given.
Option 2: get a good hair cut, polish your shoes, iron and press your clothes and choose a smart tie. Get a good night's sleep beforehand, and arrive ten minutes early. Have some questions prepared that show you have done some research, read the handouts, read the relevant websites and retained at least some of it etc.