Make sure to discuss what schedule for eating will look like after surgery. My nutritionist made a custom schedule for me based on my daily routine and work schedule. If you get a schedule stay getting used to it prior to surgery. I second the other response, do your own homework on protein drinks. Be careful about recommendations at the store too, I had one employee almost convince me to purchase a supplement that would not have been good for me at all.
I was supposed to have my surgery Tuesday morning, I spoke to my surgeon today and it will most likely be postponed till Thursday. My procedure was at a surgical center and not a hospital so I an sure that plays a part. He was worried about roads, the parking lot, and possible power outages. I'm trying not to stress out get to bummed out it is only two extra days.... good luck to you