Pre-op visits for me included a brief OK for surgery physical from my GP, an OK from my Colo-rectal Doc, then two visits to the hospital.
1) an evening tour of the facility (they do this for groups of families with scheduled surgeries), meet the surgical dept. and recovery head nurses, look around the public areas/facilities, visit a patient room, where are the snacks & drinks for whoever was to wait during surgery and stay over, how to use the coffee machines, where to park, etc.
General Welcome Wagon stuff, which was all helpful.
2) A half day - Chest x-ray, multiple vials of blood for tests & type matching, piles of forms to fill out / read / sign off on, visit to the accounting office to re-verify insurance pre-auth, pay my co-pay/deductible balance, discussions about living will and what they were required to do if I did not have one. Registering car info for the security folks so that they knew what cars would be there with my family. I'm sure there was more, but I was sort of glazed over with the shock of the impending surgery.
There was no discussion in either visit of procedure-specific details.