I had a lovely lovely ELCS 8 months ago (to the point where Im oddly evangelical about it now, because I still cant believe how it compared to my first absolutely hideous first birth and post birth trauma).
Everyone's experience is clearly very different and it sounds as if the first time was pretty full on for you.
I went in thinking absolutely nothing could be worse than last time, but I expected it just to be a medical process to 'get through', a means to an end in terms of meeting my new baby, but I didnt expect to enjoy it at all. People still seem to think its strange when I say that I really enjoyed it and it was a hugely positive and lovely experience. Being lucky enough to have a positive experience this time around also took away a lot of the trauma of the first time. I dont feel I cheated nature - Im just clearly not designed for popping them out the way she intended!
With an ELCS, its more relaxed, because whilst there's clearly still a risk etc, there isnt the panic of an emergency delivery and so hopefully the theatre staff should make you feel at ease. Would say its definitely not an intimate affair - loooooads of people in there, all with a critical job to do, but definitely busy. Prepare yourself for that - I was glad someone had mentioned it to me. The anaesthetist at mine was truly lovely and talked me all the way through the process as it happened and made me feel like she was completely in control - they stand behind your head and so can see everything that's going on.
Again - healing experience different for all, but I was up and in the bath after 6 hours, (turfed) out of hosp after 24 hours and felt better every day. In comparison to the pain, aftermath and trauma of the first time, bit hurty, yes, but no comparison at all. I made myself behave and hold off on the driving, although I felt really well, and Im glad I did.
Get big pants (or really really tiny ones) - was surprised how much not the scar (dont know whay - seems obvious now!), but the bit above it was tender and needed support.
Ooooh - and I would go for a severe bikini wax before hand (again, advice given to me by ELCS pro!). I had a huge and v sticky plaster on afterwards - you definitely dont need to be taking any extra fuzz off when that's removed. Its sore enough!
I didnt get any trapped wind, but apparently its common and can be quite painful - maybe take some wind eze or similar? Someone else also mentioned constipation from painkillers - didnt affect me, but worth buying a box of senakot just in case!
Oh - again, hospitals are all different, but I found as a second time mum I was pretty much ignored on the post labour ward. They put the bed at a height I could get out, but not one I could then reach to get DD in and out of her goldfish bowl. Not great, but forewarned is forearmed.
Best wishes, I really hope you have a positive experience xx