Certainly knowing your material will serve you, but so will your ability to read the room and shape your message to whatever feedback the audience is giving you.
Fans can now directly message customer service instead of posting a general message on the wall, and nearly all tools are designed to encourage feedback from fans in one way or another.
"We have to send a message here to the world, " said Nelson, who said he has received positive feedback from several colleagues on the Armed Services panel.