In article , Peter Jason
wrote:

I usually have my photos printed at a kiosk, but for the A4 larger
ones I use the office Fuji-Xerox laser color printer.

that's a mistake.

Is laser-toner photos longer lasting than the Kiosk-printed variety?

it doesn't matter whether they do or not. fresh out of the printer,
they're already not as good as what can be had from even a mediocre
photo printer and a colour managed workflow.