I stayed overnight, which I think is fairly common unless you have a switch or by pass, which I did not.
I will be thinking of you tomorrow and it's good your surgery is early, mine was at 12 so I had developed a hummer of a headache by that time from no coffee. Go ahead and expect to feel crummy for about 18 hours, just in case ... heck you just had surgery, but it gets better fast after that. All the folks in the hospital and my doctors office were just the best in the world. Could not have asked for more kind considerate and caring people to take care of me. That means so much!
Thanks for the ruler tip, mine copied over as a ruler, but I'll have to wait to see if it stays in.
Good luck!