I'll give you an example of how little I know. We occasionally have a short action film presentation and a studio will make an animated introduction. Right before it's announced, he tells us which number tape machine to roll. No, because I filter it all through the sense of astonishment, surprise and just plain uniqueness of that experience. There's no preparation for it.
Some celebrities do get a little dry-mouthed.
They make mistakes. I understand Elizabeth Taylor's appearance at the Golden Globes. Ian Rothkerch is a New York writer.