I got mine cut on several years ago, torn rotator cuff, bone spurs.
I was riding the next week, no sling or anything after the first couple days, started PT almost immediately, maybe 3 or 4 days after surgery. Something fused back together, and they had to knock me out and "manually manipulate" my shoulder, which consisted of spinning my arm around like Pete Townsend on the guitar. My whole shoulder was blue/yellow when I woke up, and it was sore.
Here it is, several years later, it's about 80% of what it used to be before it was screwed up, I guess that's the way it's going to stay.