Dan, the shaving is on Thursday and your conference isn't until Monday.I suggest spending as much time between Thursday and Monday out in the public so you can become "comfortable" with the new you.One question which is key ... do these 800 people at the conference know you? If not, they're seeing you for the first time and it won't even register that you've gone sly (unless it's part of the introduction). And to that, I would avoid any reference until the end of your presentation (if then).Personally, I think it's going to be a great experience for you all around.