Pixels photo package ?s non digital ship

[heidiatmn1]

1) We are looking into buying the 15 photo pixels package that includes digital pictures. Am I correct that's the only way to get digital copies on a non digital ship? 

2) Do they care which pictures I buy-do I need to be in them? We have a group traveling and thinking 15 photos is too many for any 1 cabin but between all of us would have no problems hitting the 15.

3) Do the photos have to be 8 x 10-usually the embarkation ones are smaller?

4) How does it work? I believe my mom had a folder at the desk she put her "maybes" into and then picked at the end of the cruise-that still how it works?