I'm soooo excited!! I'm having PRK (a different method of Lasik) done on May 7th!! YAYAYAYAYAYAY!

PRK is a bladeless and flapless procedure and I wanted that instead of traditional lasik because they do NOT create a flap on the eye (so there's no risk of flap related complications down the road to worry about).
Has anyone had PRK or Lasik before? Any tips or advice?
I'm nervous but excited at the same time. My doc gave me a prescription for valium; so hopefully that will keep me calm during the procedure.