Both surgeries were for decompression, I'd had sciatica for years but got to the stage where I couldn't stand or walk for more than a few minutes, first op they shaved a disc, all was well for about 10 months, then they removed some bone, I had no relief at all, they thought I had muscle spasm. finally after a couple of months an MRI scan showed my spine was becoming crooked, the surgeon could not believe that new bone was growing where the bone had been removed, so the TLIF was done, I woke after the op and the first thing I said apparently was 'I'm mended'. My surgeon was great and couldn't have foreseen what happened.
Good luck, I'm sure you'll be mended after your op, the majority of people are!
We went to Canada after mine it was amazing. Enjoy Barbados, fabulous place.