I spent 3 days / 2 nights in hospital after EMCS with both my DCs. I was out and about (albeit a bit delicate and on painkillers, and for a short time) 5 or 6 days after each birth. Most of my friends thought I was a bit mad, but I'd been in hospital before each birth too and felt completely stir crazy, and just so much better for going out for a coffee / to get one or two things from Tesco / a bit of fresh air! Walking for very long was quite tiring / sore.
I could bath the babies in the raised bath on the changing table pretty much straight away, could change nappies etc, though DH helped and carried the water. I wasn't doing cooking / housework / Tesco shopping for a couple of weeks. I held a pillow on my lap if DD1 wanted a cuddle, just to protect my scar. It is horrible if the scar gets knocked, or if you sneeze without having time to brace, or even early on when you have to push to have a BM (sorry!).
I was signed back on to drive after about 4 weeks each time (and felt genuinely safe doing this). Folding and lifting our double buggy into the car wasn't much fun when I first started driving.
The first week I really knew about it when I was getting close to the time for my painkillers (pale, sweaty, grumpy, tearful, watch-checking pain). Turning in bed or getting up / down into bed or a chair was a bit painful. After that it wasn't so bad, just a bit sore, unless it was pulled, knocked etc... However, over 18 months since the CS (with both DC), I still have a loss of sensation in my abdomen (can't tell if I'm leaning against something or bumping something with my belly!), coupled with occasional minor pain and tenderness in my scar (after a particularly violent sneeze, or twisting awkwardly for example). I also have a saggy skin apron which I doubt any amount of crunches will pull back. My CS friends are the same. One is booked in for a tummy tuck.
Of my friends who had CSs, most have also been OK. A good friend who has had 3 CS had a bad infection with one, which ended up in her having an open wound for 3 months. Another close friend had an infection with her first CS. Both had to be readmitted to hospital for a few days.
I just got my BFP today after a mmc and cp, but hoping this will go the distance, and planning an ELCS. It is a matter of pros and cons. It is major surgery and there are risks from the spinal / epidural, the scalpel (cutting the baby or bits of you, like bowel or bladder, infections etc... Personally, I know that my cervix is a bit of a one-way street, and don't see why it would dilate this time when it hasn't before! With DD2, she had major declerations in her heart rate during my protacted weak labour. I think for me that there is less risk of a planned op where the surgeon can take her time, than an emergency procedure, but this might not be the case for you. Good luck deciding.
CBear, I'm so sorry you are doing it tough right now. I hope it will get easier for you soon. I found 4 or 5 days after the CS emotionally worst, so I do feel for you.