No matter what - rehearsed, under-rehearsed, over-rehearsed, doubts about rehearsing - the first gig is always the first gig, and you put on your little praying hat, batten down the hatch, and do what you do.
Just as radical heirs apparent are said to lay aside all inconvenient revolutionary opinions when they come to the throne, it was believed that Mr. Mill in Parliament would be an entirely different person from Mr. Mill in his study.
There's a really classic cliche every time you switch the TV on - you see cops arguing. I have spent a day a week for many years in the presence of police and I have never seen them argue. It's a military hierarchy. They do what they're told. There's no bickering.

