It will be two years since I had a reverse TSR on my right shoulder. I hope your surgery and recovery go as well as mine did. Although I never had prior rotator cuff surgery, my surgeon gave me a choice and said my rotator cuff was borderline, not in good shape, frayed, and if they did a regular TSR, they might have to re-do it to a reverse anyway in a few years if the cuff continued to deteriorate. The healing is faster on a reverse, since some of the rotator cuff muscles are removed, you have no long waiting time for missing muscles to heal, so can start rehab a few weeks sooner than with a regular TSR.
I am so pleased with my shoulder results, I have no more constant arthritic ache, and my range of motion and strength is such that I don't even think about my shoulder being artificial, and sometimes have to stop myself from dragging or lifting something way too heavy. I can reach that top shelf again. My left shoulder is still fine, so I have to remind myself to let it take more of the weight when needed. Kayaking -- no problem!