2 CS for me. First was emergency, second was 'planned' 24 hours prior 
It is really important to get out of bed and move as soon as you can and stand up straight as soon as you can, but take your time doing the action.
As PP said, keep on top of your painkillers even if you feel fine.
I ate loads of dried apricots/fig rolls to help with the constipation, and it worked.
Buy massive knickers so that elastic doesn't rest on the incision.
When you sit up, it's best to roll onto your side, and then swing your legs down & push up with your arms.
When walking some people find it easier to roll up a towel and hold it against their scar...this definitely helped me if I needed to cough/laugh.
Nothing can prepare you for the trapped wind pain, but they can give you things to help with it, make sure you ask.
I was doing the shopping in the supermarket on my own (with DS) after a couple of weeks the second time around!