Think you will, Joe.
Nervous is normal, one thing we all seem to agree on is the arthritis pain is gone. Not less, not hmm? it was gone for me.
The thing I found the first time was that once I got in and was in the waiting area, you are in the chute and ready to go. A little nervous, but the care and professionalism takes you through; before you know it, you're beginning sedation and (for me) immediately waking up with a very nice nurse telling you everything went well.
It was that quick for me both times. The first time I woke up (pretty quickly and not groggy), in my room bed. The second time, I woke up in the post op area, with three very cute nurses (around my age, no less) busily taking care of me. I expect and hope that for you.
You'll have pain from the surgery, managed with meds, be up and about and work through the initial walking and exercise, but the thing that kicked me right out of any funk about that is - NO FREAKIN' OA PAIN!! it was aMaZing.... all those years with that pain kicking my behind... gone.
Nervous is human. You'll be good and eventually, in a year or so... better, so much better.
Just my opinion, but at two years, I can tell you the future is good.