Hi there, I'm Louise- I had all 3 of mine by c-section, the youngest is 7 months old- other 2 are 12 and 6 years old.
It is a common procedure these days and although they've probably scared you with the paperwork to sign to cover their back at the hospital there's nothing to it really although you'll feel quite flimsy for a few days. Make sure you feel ready to go home though, I don't know if they're doing this up and down the country (are you in UK?) but they said to a woman who was on my ward and had had her 1st c-section that she could go home after 2 days even though she'd been feeling sick the day before. When I had my 1st CS I was in for 5 days and same on my 2nd- my other half's mum was in for 10 days 35 years ago (seems a bit extreme by today's standard but all the same don't leave if you don't feel ready- it's still major abdominal surgery and with your 2 boys you'll need to rest as much as you can to speed up your recovery).
I was knocked out for my 1st but awake for 2nd and 3rd- it may seem daunting being awake but you'll see and hear your baby as soon as they deliver him/her and you'll also find the recovery quicker.
Make sure you get plenty of help when you get home, you must look after yourself!
Best Wishes for tomorrow, you'll be fine
Lou xxxx