My dad is having surgery tomorrow, is this normal procedure (see details)?

My dad is having his shoulder replaced tomorrow at a special surgery hospital in NYC. They asked for him to bring his living will. I am not in New York and we don’t have much family so he will basically be alone for this whole procedure & recovery. Is it normal that they asked for him to bring his will? He had his prostate removed (longer surgery) and they didn’t make this request. He is very nervous, as am I, but I keep telling him this is normal. Is it?

Also, will a flower company (like 1800flowers) deliver to a hospital? I’m sure the hospital won’t know what room he will be in until after the surgery… how does this work?