Sounds like several of us have had shoulder surgery's.
I had my right done a few years ago. Bicep tendon had popped out of place, torn labrum, etc, etc. You wont be doing anything for a while.
And remember when they say 6 weeks in a sling, that doesn't mean you will be able to use your arm after 6 weeks.
First off your arm will be very weak after 6 weeks of non-use. Second you will have to spend a lot of time with a physical therapist to get your range of motion back, and then they will work with you on strength.
I saw the therapist twice a week, AND worked on it myself at home 2-3 hours a day !
They will give you lots of exercises to do, and give you a pully system that you will use to pull your arm up and down to keep it from freezing up, etc. It's a pain in the *** for sure.
The surgery is the easy part, the physical therapy will kick your ***. I'm not ashamed to say that my therapist made me cry a couple times. They don't pull any punches, they have to push, pull, twist your arm in several different directions to get the range of motion back. They will push till you say stop, and then push a little farther.
I don't know why, but I had a very hard time recovering from mine, took several months longer than what it is for most folks. I have full (95%) use of my arm back, but after 3 years I still have pain in it almost every day.
Good luck with it, hope your recovery goes better than mine.