My understanding of the zoo situation is that was a different set of facts than this case. With the zoo, they had prior knowledge that there were safety concerns with the way the enclosure and barriers were constructed - they even memorialized those concerns in minutes of board meetings. So not only was there a reasonable danger they acknowledged that danger - in writing. Imo that's why the zoo case settled even though mom was negligent in lifting the child up on the railing to see better.
With SA, as far as I know there was no prior knowledge on the part of the cruise line that an open window on a deck of a cruise ship, with a railing placed around it, was dangerous. In fact, it wasn't dangerous until grandpa lifted a toddler over the railing, held her with one hand - ONE HAND - and then she fell out. Maybe he even let go of her, I don't know. But please find me a jury of 6 or 12 people to stand in that exact spot even on the most perfect, windless day in history, lean over the railing so their head is only inches from where "glass" would have been (if not actually outside the window), and have them find it was reasonable to think the window was closed. That jury does not exist - because SA knew the window was open all along and his excuses are hiding something else going on, imo. I don't think RCCL is going to settle this case and I don't think they would lose in court. I've been on many many cruises, there are open windows like the one SW fell out of everywhere - it's a ship. You cannot stand in front of an open window without knowing the difference, the view is more clear, there is a breeze, etc. You could even be blind and know the window was open versus closed on a cruise ship from your other senses. His statement and continuing this ridiculous theory is just making it even more suspicious. Imo.