Hi GoBlue,
Maybe get a movie the night before. Something comic or light that doesn't require concentration. Watch the sunset. Have a friend visit. Being with others is helpful even if you are distracted as they will draw your attention away from Friday.
Light exercise is good. The day I had my nerve repair my surgery was scheduled for noon. Aack! I still had to be NPO from midnight on and was just buggy. Of all things I decided to go for a nice swim in the morning and felt much more peaceful afterwards.
Hang in there. You'll be waking up from your procedure before you know it.
I'm sending hugs and healing vibes and will keep you in my prayers Friday.