My Zoey had this surgery last year in Oct. The vet took her home and kept her for 5 days until she was up and doing well. She was still on pain killers when returned to me. We started rehab immediately. The dr's wife (also his assistant) worked with us until I felt that Zoey didn't need any more rehab. It was a long series of walks and exercises. She finished in April of this year. The rehab was no extra cost - it was included in the price of the surgery. There are some threads about this surgery. I explained in detail what Zoey did for rehab in a few of them.
Good luck with your little one. I'm sure the surgery will go well.
__________________  RIP my darling little Gina |