Well, working in a hospital, I can tell you that it is the LAST place you should think you will get rest. It's always noisy and they have to do their jobs, around the clock. As much as we try to be quiet, if we tip toed around nothing would get done.
The first few days post op are the roughest. It gets easier. My first day in the hospital, an intern told me that I would feel like myself again in a week. Although that was a slight exaggeration, it was not that far off. I got to a point where I had to remind myself I had surgery just days ago, and I was often reminded with a pain here and there.
Now 10 weeks out, still have had a few MINOR glitches, not chewing enough, stalls, and picking a wrong food, but I don't regret it. I'm averaging just under 5 1/2 lbs lost weekly. Things are continually changing and now people are NOTICING! I'm also finding distaste for a lot of fattening foods that I enjoyed before. Don't focus on the bad! Better days will come, try to enjoy the ride.