Whoever the surgeon, the day before surgery will be spent with a bottle of the most evil liquid, and a week's supply of toilet paper and no solid food doing a bowel prep routine. Midnight before and up to surgery NOTHING to eat or drink!! Evil cackle!!
From anesthesia wake up and next day, its pretty miserable just lying there in the bed, but no matter how bad you feel, its just damn amazing that it happened!! You will do fine.