We were let in on a little trick by our table mates when we sailed last October regarding the pictures.
They offer packages that in some cases work out to the good. But it's hard to know if you'll have or want the number of pictures it takes to get one of the packages.
Our tablemates told us to just find out pictures each night and put them all together in one of the slots(if you've never been, you'll know what I mean when you see how the photos are displayed). Then at the end of the cruise, you can go back and grab all of your photos and sift through and figure which ones you want to keep, etc, and pay for them at one time. It turned out we didn't end up needing the packages because we only wanted a couple 6X8's and a few 8X10's so it was cheaper for us to buy them individually.