There is some use of facial recognition software also. When we went to view our pictures, we found a fair number with one of our family members in the background of others who were posing for pics. The best was one of my sons, apparently having an intense heart-to-heart , in the hot tub, behind a group of celebrating teens.
I will also say that the photo staff members were quite helpful in linking pics from my cabin with those of my minor sons, in another cabin.