The biggest worry of all should be the most important person in the room. The reaction of that one person to your presentation is probably going to be the biggest factor in whether or not your presentation will be successful at accomplishing your goal.
Think business cards are a thing of the past? Don't give up that increasingly rare chance for person-to-person interaction. And don't worry about coming up with something to say: you can always reflect on how amazing it is we're still handing one another small pieces of paper in 2014.
Martyrdom is good for those with saintly aspirations but if you've chosen a career in business, I'm guessing that's already a pretty unlikely goal. If you're not in a condition to come to work, please stay home.
To be truly successful, you need to determine the difference between good and bad advice as it relates to your own career aspirations. That means you'll need to learn how to keep the useful parts and leave the rest.