Sadly, it does hurt. I had an elective booked but went into labour anyway early and man, I do not know how people do that pain! The c-section pain was far more manageable and everyone tells me I have a low pain threshold {felt like telling them to have one minute apart contractions and see how much they swear but each to their own smile}.
Pain management is an art as well as a science so speak up asap if you are in pain. I hated the super trippy drugs like tramadol and preferred to go with 6 hourly paracetomol and voltaren and deal with the bit of pain they did not cover. I kept using these 2 drugs for about 4 weeks at decreasing doses (so stock up now).
I work in 'wounds' and no way jose was my wound NOT being dressed as is current practice. I took my own dressings into theatre and hospital and insisted they use what I wanted. I did this for 4 weeks, then switched to bio oil and have had no problems with my scar or healing to date. The dressing also gave my wound support when I laughed or coughed. My Ob was cool about it because she knew what I did for a living.
Packing. Take a big packet of pads (gross but consider you have not had a period for 9 months and you can cope), comfy undies, flip flops (your feet will be swollen), your mat clothes not 'real' ones (alas, not many of us are posh spice), makeup and nice wash stuff (hospital stuff gross), some snacks (even private hospital food is average, and you will be hungry), some books (last chance you will have for a while) and don't forget your chargers for your mobile, ipod etc. And CAMERA. For baby, minimal stuff - none of mine fitted my wee man anyway.
Good luck.