Sorry, don't check here all that often.
My actual thought is that pictures of SA participating in a re-enactment on board ship might have probative value, though more likely for the defense than the plaintiffs, in order to contradict him on something. I was really making more an offhand comment there.
Photographs of the ship are easily admissible to show how the ship looked at the time of photography. Photographs of a man doing something on a ship aren't being introduced to show how the ship looked, and are harder to get into evidence.
I read the pleadings surrounding the motion to dismiss as an argument over whether there are factual disputes that are worth continuing the case to the (time consuming and expensive) discovery phase, including depositions. The plaintiffs are saying that there are facts in dispute (in spite of the photographs and video) that if properly proven will entitle them to recover damages. Royal Caribbean is saying it doesn't matter what else they prove, given the photos/videos, they can't win.
That being said, this battle is plainly not just being fought in the courtroom but in the court of public opinion and whether the main purpose is to get damages or get SA off the hook I am not sure.