Blood and Catheters

So today I learned that my blood work came back OK and I'm all set for surgery next Wednesday. And then I asked the nurse one more little question: Is there anything that I haven't asked about that I should know? Or that you would tell a relative if she were having this surgery? And she says, Well, did they tell you that you probably will have a catheter for the first day after surgery? What?! So I've heard the term and have some sense of what it means, but I thought I'd wikipedia it anyway. "In medicine a catheter is a tube that can be inserted into a body cavity, duct or vessel. Catheters thereby allow drainage, injection of fluids or access by surgical instruments." The nurse claims I'll just have 3 little holes or pin pricks and it takes 3 seconds to pull out. The only good thing I can figure about this is that when I wake up in the recovery room, I won't be sitting on a bed pan and have to go through that whole deal.