MitralMan,
It will go quickly. You won't have a lot of time to get nervous about things, because they keep you busy asking the same questions over and over again.
Because of the drugs, the first night may seem somewhat surreal. I recall it, because I hardly slept a wink. I had a nurse assigned just to me, and he was great about getting me all the ice I wanted (which of course I was melting in my mouth as fast as I could, as I was incrediubly thirsty). I switched over to fentanyl the next day (I assume I started out on morphine), which seems to have fewer side effects.
Don't be surprised if you get the X-Attacks afterwards. That's when they send three burly guys in with a portable chest X-Ray, they shove it under you, take the shot, and cart it all out, saying "hut-hut, hut-hut" the whole time. I had that every time they took something out (like a chest tube), apparently to prove that it was, indeed taken out.
And the scale people. Pushing a scale into your room and weighing you over and over again. One morning at 4:00 AM, I asked why she was going to weigh me yet again, having been just weighed on the previous shift. Her eyes got very wide, and she ran out of the room. She apparently didn't come back until I was asleep, as the scale was gone when I awoke.
And the midnight BP-takers are a stitch. One tried to take it over my elbow, getting a reading something like 97/100. I had to grab him so he wouldn't leave with that reading, which would have brought in the emergency crew with the paddles...
My thoughts will be with you tomorrow, as you go through this. When you're part of this site, you're never truly alone. Please see if someone can post your condition. If not, please post again when you can. By now, you know that we worry.
Bon chance,