I had an abdominoplasty with muscle repair. It wasn't due to the way I looked, I looked fine, but my stomach muscles had completely torn so I struggled with every day tasks like sitting up from lying down, lifting my dcs etc
My memories, it hurts, really hurts. A tummy tuck is not for the faint hearted. You can't lie flat or stand up straight for 2 weeks, and it will feel tight for many months longer. You have to be careful when you wake up that you don't accidentally stretch. I didn't realise I did this, but I soon stopped because omg the pain.
The cut goes horizontally hip to hip and right through your lymphatic system. Do the recommended massage post surgery to aid drainage and healing. I didn't because I had small dcs and no time. I now have a bulge over the scar, a bit like a c section pouch where fluid builds up as my lymphatic system isn't draining properly. So I have gone from a relatively ok stomach but no core strength, to excellent core strength but a bulgy stomach. So that's something to consider. You may not get the flat stomach you want. But I'm ok with it, I wanted my strength back and I got that!
You may be left with areas with no feeling on your stomach, you may have to have your belly button moved, or you may be left with it in slightly the wrong place. Mine is about an inch too low. I decided this with the surgeon as a better option than the extra surgery and healing to move it.
I went to one of the best surgeons for this, based in the SE, PM if you want his name. The surgery was v smooth, as was the healing. My scar is pretty much invisible. But with any surgery bodies are all different so you can't predict what the scar will be like, or how your body will cope.
As for help, you will struggle for at least a week and will need to shower sitting down (one of those invalid stools with adjustable height is perfect). You won't be able to lift heavy cooking pans, or laundry baskets. You'll need help with basic household tasks and possibly help getting in and out of bed. Well you can manage but it will be easier with help. From 6 weeks you'll be absolutely fine to do anything, but give yourself 3 months until you feel normal.
Very normal to completely regret it initially as you struggle with recovery but change your mind once you have healed.