Southern Norway is quite good for keeping stuff in the open.
Around 35% now, peaked at mid 50s in summer and much lower in winter.

Never really need to dry PLA/PETG, but TPU does need it.

I do run both AMS every once in a while, mostly to regenerate the silica tubs a bit.

I did have stringing on PETG once, but drying while printing was enough to solve it.