Saw this article online and found it to be hilarious, although not good PR for Disney. I guess this Castmember either didnt turn in or stole this passenger's iPhone, and then took various pictures around the ship with it. Through a PhotoStream app, she started getting the photos as well, and shared them in a Facebook photo album. Read the captions after you read the article, its a very good laugh.
http://www.theverge.com/2012/5/23/3038392/iphone-thief-disney-cruise-facebook-photostream
http://www.theverge.com/2012/5/23/3038392/iphone-thief-disney-cruise-facebook-photostream