OK, interesting because it might be quite crucial in court. I see it differently, as I see it ....
CW runs towards the windows, ... she simply goes to the nearest one, there is no difference between any of the lower panes there. I think the "maintenance hatch" is actually a few panes to the right.
He follows her, and realises he would be looking through a double tint of two panes directly above CW.
Both the upper panes to the left and right are open, and he chooses to go TO HER LEFT, perhaps because of the post. But he could have equally gone to the right.
He immediately leans over, and possibly out, to check "the view, or other reason" for 8 seconds.
He then claimed he bent down with CW and tried to bang on the glass and found they couldn't, but from the videos I think this is debatable whether he did or didn't. Very quick if he did.
If he did, he finds CW is down below a ~40" rail which he finds it awkward to get down to, and then waddle under.
How to solve all this?
Move CW from his right to his left, and up and over the rail, to the clearer view ie the OPEN window. Then they can do the "games" together, ... and ..... yeah well ....
And just to be clear about my thoughts now, I don't think he had any bad intentions, he just *advertiser censored**** up.
CAPS just for emphasis, not meaning to shout at you, promise
How do you see it ? Pretty sure this will be contentious in court!
PS - adding the video link .. there are two video bits, both are needed.
Video: grandfather dangled toddler out of Royal Caribbean window for THIRTY SECONDS | Daily Mail Online