The good news is, they were all still on the card...
... but the bad news is that when I came to look at them I found that most of them are such rubbish photos I wouldn't dream of inflicting them on the world. Snap after snap of darkness with a couple of tiny lights. No matter how much I tweak the brightness/contrast, some of them are completely unrescuable and the rest are just poor. The photos of the mud are just about passable... but it seems a shame for that to be the only memory that survives in any more concrete form.