26 years since I had a graft, my memory is that I was not meant to get it wet. Healing was like normal skin healing iirc.
But the expert is worth asking
I had mine done between Presley and Bolan dieing.
I had a bit about 3inches by 2inches put on my arm, the donor site was my thigh and they shaved off about four times as much skin as they needed, I guess they were making lamp shades.
I think my arm was bandaged for 6 weeks. I got used to the smell of rotting flesh.
I can’t really remember what my leg was like, except I had to explain loads of times over the years about the funny little flaps on my leg, they must have made a sawing motion with the spokeshave.
The graft is still smooth and hairless.