I had a semi elective c-section (bubby was transverse). It was at 1pm in the afternoon and the feeling was returning to my legs by 6pm that night - BUT I couldn't get out of bed until the next morning due to my catheter etc. Due to the good pain relief, I thought I'd be able to spring out of bed but alas, was much sorer than I thought I'd be. But that subsided each day and I was ok by the time I got home 3 days later.
As for light exercise, well, it's hard to say how you'll recover. I wouldn't have done anything other than walking for a couple of weeks.

I recovered pretty well but wouldn't have felt confident doing loads of exercise - not sure what you're thinking of doing?

S X