If you are in charge of the VIP at an event, keep an eye on the VIP throughout the event and make sure he or she is not cornered by a new, unwanted friend who is hogging his or her time. If this happens, you must dive in and rescue the VIP...er, I mean... politely intervene.
Never monopolize a VIP at an event. Get in, get out. "Loved your movie." "Your book inspired me." "Your stage dive into the crowd was so unexpected."
Do not try to make a personal connection. Move on. Let others take their turn.
Thank you to the great folks at the Culture & Manners Institute for their great insight!