Before we discuss the 'what to do' concerning this, I ask you to consider the following: Would you agree that meeting this high standard is a sure way to an appreciative audience? Because that is how high we raise the bar here.

Isn't that what all speakers are going for? You would like to think so. But intentions don't make reality. When a performance is found lacking, it is lacking because of something speakers do, or don't do for that matter. Regardless of his or her intentions.

Are you up for the challenge? Here is what you do. It should be obvious that the power vested in a speaker does not include "deciding what people find interesting to hear." So first of all you find out what brought them to the presentation in the first place. Then confirm their expectations are correct or negotiate alternatives. If need be, suggest that they are welcome to consider attending other presentations instead.

Only with this collective mindset in place, should you proceed with your presentation. Regularly ask for feedback on content and process, especially if something happens that contrasts the general atmosphere and direction of the event. Summarize after each interaction and pay attention to clues that indicate some unfinished business. Depending on the relevance, you can always suggest moving specific topics to another time or occasion.

Make your presentation about the expectations of your audience, not yours. You will find that they are all ears and they will ask you questions that signify actual business opportunities.