I had a T10 to pelvis fusion, along with bilateral sacroilliac fusions 10 months ago at Mayo Clinic --Rochester. My situation was complicated because I had a previous T2 to L2 fusion with a Harrington Rod. My surgeon was Jeremy Fogelson. Dr. Fogelson is amazing and my experience at Mayo was wonderful.
After surgery, I spent 10 nights in the Mayo Clinic's Inpatient Rehabilitation Center, where I did 3 hours of therapy a day--equally split between physical therapy and occupational therapy.
If you have surgery at Mayo definitely request Inpatient Rehab. It did a lot to propel my recovery.

I was 67 and I am so happy I had my surgery. I agree with everything Kadeoh/Karen said.

My previously chronic pain is gone. Initially, you will have pain from the surgery, but it is well managed.
I was at the point where I moved away from ice and just occasionally used heat. But unfortunately, I tripped and fell a few weeks ago and I am back to using ice periodically.

I feel best when I am walking and standing. My back does get sore if I sit too long. You will have limitations--no Bending, Lifting, or Twisting. It can take a long time --1 1/2 to 2 years to completely fuse when you are my age.

For success, one needs to be committed to physical therapy and walking.

One issue for me was that I had and have Osteoporosis. I was on Forteo for 14 month before my surgery and 10 months post surgery. Evenity is a newer drug that builds more bone than Forteo and I know several back patients on it.
Good luck in making your decision.
Nadine