That photo store picture rings a bell. When 52 Sqn (Andovers) moved from Seletar to Changi. Didn't have much faith in these local shops - so set up a darkroom in the built in wardrobe in my room. No air, temperature in the thousands and thick with fumes from the chemicals. I don't think it was clever but I made a few decent pictures.
Interesting also to see the busses of the Changi bus company. As a kid, they were the contractor for the Army kids school run.