You asked at the beginning of the thread for suggestions of things you could do to be ready for Tuesday. (so soon - yay!)
While I obviously haven't been exactly where you are, I've had 2 caesarians and a hernia repair, so can offer one really useful thing. After your surgery the nurses will likely encourage you to get out of bed and walk. DO it! It'll be a slow shuffle and you'll tire easily, but that's ok - the people who just lay there have an awful lot more pain and recover more slowly.
Consider taking your own pillow with a coloured pillowcase so it's obvious it's yours. It can be difficult to sleep in hospital and your own pillow helps. An eye mask and earplugs might help, too.
Take slip on slippers or flip flops with you for all that walking.

Choose a soft, comfortable outfit to wear to and from the hospital.
Get your hair trimmed (and coloured if you do that)
If your budget allows, get your nails done or do them yourself. Polish needs to be clear, since they'll need to be able to see your nail beds, but a bit of nail art does wonders for the morale.
Clean out your fridge and stock up on a week or 2's worth of whatever you're supposed to eat and drink when you get home.
Stock up on a bit of pleasure reading - you may not want to go out much in the first few days back home.
I hope everything goes swimmingly and you'll be back here telling us all about it in just a few days.
Kelly-Anne