In article , Peter Jason
wrote:

Before going to a photo kiosk I PShop all RAW
images, and crop to a 2:3 ratio. I save to jpeg.

The quality of the Kiosk prints are mediocre even
if I turn off the kiosk's offer to "sharpen" &
"auto-adjust" the images.

no surprise there. it's a kiosk, not a professional photo lab.

Are these just ink-jet prints

probably, but it could be dyesub.

& is it possible to
get a better quality?

probably. it depends why they are mediocre. if it's the printer, then
yes. if it's the photo, then no.