Before I had my babies I had assisted in many caesareans in theatre so knew the procedure and what the inside of a theatre and all it's staff was like. This made it easier for me I think.
I've had 2 sections (an emergency, an unplanned after waters broke and no labour) and am going for a planned one in early Feb.
I've had an epidural and a spinal and for me, the spinal was better. I will be asking for a spinal this time too. I also know what drugs I prefer in it, but that's more an experience thing.
Ask as many questions of your care givers as you can. Ask about not only their current procedures but how much they will customise the experience for you. That way if they are unbending with their 'rules' you can prepare yourself as much as possible.
The longest part of the operation is the stitching at the end. Generally though it's all over in under an hour.