Most lawyers who give speeches regularly have experienced enough nightmares that they know to get to the site of their speech early, check out your environment, set up A/V equipment, and then check out the A/V equipment (more than once).
Tom Antion of Great Public Speaking adds a new twist to be concerned about. He suggests you don’t leave the room after setting up – not even to go to the bathroom, if there are other speakers who are likely to mess with you’re A/V set up.
His experience gives me chills just thinking about it. Thanks, Tom.