It’s all to do with your recovery, alcohol thins your blood so if it’s in your system then you will bleed more during surgery and post op, also if your dehydrated you will feel poorly. If it’s 9 days before your op and you don’t go on a 3 day bender you should be OK. I was told 2 weeks before and after. The 2 weeks before was a struggle but I did it because didn’t want to risk anything going wrong. I’m 3 days post op and having a drink is not on my agenda!!! There will be plenty of nights out when your all done xxx