mummytopebs, I had a spinal with my elective c-section for DS2. The theatre staff were really great. You will feel nervous and going into the theatre is a bit daunting, but don't be afraid to tell them you are nervous as they seem to do their best to put you at ease. I was extremely nervous and embarassingly quite sweaty as a result but they were very nice about it.
Once the spinal is in and the surgeon gets to work it all goes really fast. The baby is out pretty quickly (10 mins or so) and you will be there for another 30-40 mins whilst they stitch you up. At that point you have your baby and don't care what they are doing
There is pushing and tugging as they get the baby out and that can be a bit uncomfortable but it doesn't last long. They explain what is happening and if you are in any pain you tell them and they top up spinal.
Just before the baby is going to be pulled out you will here a sort of sucking noise (like a vacuum sucking up liquid, which is probably what is happening) and then the baby will be there.
I think you can ask for as much detail and explanation as you want during the op. I guess everyone is different but my way of feeling under the illusion of being in control was to ask them to explain every step of the op. I appreciate that this option won't appeal to everyone!
My elective c-section was such a positive birth experience that I have no worries about my upcoming elective for DC3 although no doubt I'll still be nervous once I get to theatre.