"Check date time and location" I remeber just recently some body finishing up in Bourne in Cambridgshire, instead of Bourne in Lincolnshire. They went home in the end.

"Have a knee trembler beforehand" Good idea unless you play the cymbals between your knees.

"Avoid last-minute brilliant ideas." How many times has somebody cocked up because of this.

"learn how to tie a Windsor knot with one hand". Surely its a better idea to go to the toilet before you do your bit. Also is it that big that you can tie a knot in it.

Dont trust anybody, do it yourself.