Thats up to you, if you have a beacon or cartographer, scanning before each print should be pretty fast, though you shouldn't need to save and load it in that case. The mesh is loaded automatically on finishing the renesh. The change I mentioned from a few years ago is that on restart Klipper doesn't load a mesh by default, so you're expected to load it before printing if you don't remesh.
I think that was a change made a few years ago by the klipper devs. You'll need to load the bed mesh explicitly in your print start macro before printing
Thats up to you, if you have a beacon or cartographer, scanning before each print should be pretty fast, though you shouldn't need to save and load it in that case. The mesh is loaded automatically on finishing the renesh. The change I mentioned from a few years ago is that on restart Klipper doesn't load a mesh by default, so you're expected to load it before printing if you don't remesh.