I had an EMCS & failed VBAC/ELCS so I hope I'll be able to help. Granted I only had about an hour to prep for my second it was still more time I had than my first.
I was never told to remove any make up or nail polish. I had nail polish on for both and make up for the 2nd.
I don't remember what happened with shaving with my first, everything was so rushed. With my 2nd they shaved me prior.
I know you won't get one but I definitely found an epidural more painful than a spinal. With my epidural I cried and cried in pain and my spinal I was able to breathe through it (while squeezing a nurse lol). Every sensation varies by person but all I could feel was numbness going down my entire body.
You are more than likely going to experience violent shaking during surgery. This is completely normal and will be controlled by your nurse who stays by your head the entire time.
You may feel nauseous and may vomit. Normal again. I threw up with my first and was very nauseous with my 2nd.
If you cannot control your heart rate, you may be lightly sedated. I had a panic attack with my 1st and was sedated. It was a horrific experience so I worked extremely hard to relax myself during my 2nd.
You will not feel "pain" per say but there may be times in the surgery that can be uncomfortable. They will push down on your ribs and depending on how descended baby is it can definitely hurt. My 1st was engaged and was horrific when they pushed on my ribs. My 2nd was only uncomfortable.
I want you to understand that afterwards is going to hurt. It might get to the point where you think, "I can't do this." but just remember that it is not forever.
Stay on top of your medications. I cannot even begin to explain the pain when you're 1 day PP and your nurse has forgotten your medicine while you sleep and you're 2 hours overdue. You want to throw up it can hurt so badly.
Alternate medications, do not depend on pain killers alone. Try and do 12 hour increments. Take prescription pain killer. 3 hours later take ibuprofen. 3 hours later take acetaminophen. 3 hours later take ibuprofen. 3 hours later take prescription pain killer. Repeat. If the pain is too unbearable, take your pain killer.
You must walk. Must, must, must. It will hurt but when you start walking you will feel better, I promise. Your body needs you to walk so you don't develop blood clots and so that your bowels can start working again.
You need an anti-gas and a stool softner. Surgery slows your bowels as well as pain killers. If you feel sharp upper shoulder pain, it's gas. It's pretty much awful being constipated and having a giant incision. These are life savers.
It may be painful to urinate after the catheter is removed. This won't last long.
Try not to over-do it when you get home. You can seriously hurt yourself. I tore my back muscles with my 1st and couldn't walk for 5 months without experiencing crippling back spasms that floored me.
I am from the US so I'm not entirely sure how much of this will apply to you but I hope I've helped. Also these are only my experiences so they may be completely different for you. Best of luck to you.