I had bilateral minimally invasive total knee replacements. I did well, but there was no way I could have gone home from the hospital the same day. I also had a lot of reconstruction on my legs (knock kneed all my life) so that may have been a complicating factor, dunno. I spent two weeks in the SNF (longer than usually because I fell down a few stairs.)
Some issues, not no biggies. My surgeon said on my first post-op appointment "you're an A+, and you don't even know it yet." (he's very modest - when he looked at my hip first time after surgery, he kept saying "that's a beautiful scar" so many times, I finally said to him that it was really nice to see someone who appreciated his work.
But he's a good surgeon, and I don't care if he has an ego. He's one of the best in the country, and he knows he's good. And I'm really glad to see that attitude in the OR.