Do you need power to be able to operate your laptop during the entire presentation, for a projector, sound installation or other equipment? Small things like a missing power extension cord to reach the nearest power outlet may have a serious impact on your presentation.
Therefore it may be better not to leave it to chance and bring your own power extension cord. Better to have it ready just in case it is missing at the location of your presentation. Also bring some tape to tape any cables down on the floor and avoid tripping over it.
