I was told it had to be up for surgery with bands that don’t have metal on them, and I also have thick curly hair, so I just did some very tight pigtail plaits with the mini elastic bands you can get.
I used dry shampoo for about 3 days afterwards then just had a very shallow bath and gently washed it. The nurse said on day 5 I could shower again, my partner just helped to put the shampoo/conditioner on because you’re not supposed to lift your arms above your head for a few weeks.
Good luck!