Everything @GonzWidDeWind said.
I had full open surgery removing everything which was the only viable option for me, and, in hindsight, should have understood better that my recovery would be lengthy.
Be prepared to be way more tired and for longer than you expect. I naively thought it wouldn't be much worse than my emergency C-section and was quite shocked at how debilitating it was initially.
They may offer you morphine for pain relief but this can make you sick and constipated so avoid if you can manage on paracetamol etc. Don't allow yourself to become constipated- Dulcoease was a godsend.
Walk as much as you are comfortable with every day. That may be very little at first. I managed the garden gate and back after a couple of days and it took a while!
Get some big plain cotton pants, I bought a pack from Sainsbury's that were great, not tight but definitely supportive- I felt like everything inside was wobbly- as if I was carrying a very full bowl of boiling oil that would burn if I jolted it at all.
Do not cough or sneeze without holding your tummy!
It seemed OTT but I got a stool to sit on in the shower, and also expanded to using it when I was prepping dinner.
The lifting thing is so easy to ignore- I can't emphasise enough how important it is to not do it. I thought I was good at not pushing my limits but 4 years later I am awaiting surgery for pelvic floor prolapse issues.