Unfortunately, I think once the cruise is over, your pictures are history.
Another point I wanted to bring up -- on our recent Dec Wonder cruise, we stacked our photos as suggested here. I noticed a few other families did the same. On the second day of our cruise, however, all 3 stacked photos of ours disappeared and never resurfaced. I searched carefully.
I noticed on the morning of debarcation when Shutters was open, other cruisers had large stacks of photos still sitting there, including their embarcation photos, so I was sad that our embarcation photos and DGS's photo with Minnie by the pool were confiscated early on, even though they were stacked.
I guess you have to collect them and have Shutters put them aside every day, if you do not want to lose any.
Tink