I have a surgery date!!

I got a call at work today from the Wish Center in Tempe, my insurance approval came through. They have me scheduled for open RNY on September 2nd!! My surgeon is Dr. Pulawski, and I have my pre op appt with him on Aug. 21st. I'm so excited, just trying to figure out what all I have to do to be ready. Any advise will be greatly appreciated because my mind is like mush right about now!!