Heck of a transformation. The whole project looks great! I dig the diamond pattern on the decking, and I personally like the effect the softener salt gave vs normal rock salt. The other pieces will likely dissolve in time, if theres no concern about side effects of them remaining until it naturally passes. Nice job on the tile, too! The pergola, open fencing along the back, lighting, etc all came together great.
I was JUST looking at fire pits yesterday, as the plumbers were gonna do a side job for me. Builder wanted $1800 to run a gas line 50' for me, to just a stub out then I'd build my own pit (using the exact same burner plate you got, that site had a lot of great options!) but the plumber wanted $1380 to do it! Instead of being $2500 into a fire pit, I'm just gonna go ham on a wood burning one using leftover travertine and tile from the pool build so it matches.
Your oasis really came together fantastic.