At the pre-op the do the blood pressure checks, check your weight go over what will happen the day of the op, they also give you pills to take the night before and the day of the op. you have to stop eating after a certain time the night before and can only have water after that till the next morning.
the day of the op, you arrive early wait to be seen by a consultant who then tells you where you are on the list and what time roughly you'll go in to have the op.
that's what I remember from my last section.