Can anyone confirm the posts re the partition (or any of the other posts) are indeed Brad?
I'm less concerned with the photo and more with the message. The family did not know for 27 years, let alone the day of Amy's disappearance, if the partition was movable? That would have come up very early on considering she allegedly was last seen by her father ON the balcony, and was with her brother, according to Brad, not long before that.
Especially in light of the fact they claimed Breitag was sketchy long before that post. If they had even a wisp of suspicion, or maybe just in general, I'd think they'd have tested themselves whether she could have been pulled over to either neighbor's balcony, or climbed over the railing to one using this partition as support. I think they were desperate for answers and would have realized this feature. I also find it hard to believe if it was overlooked by them, it was then not mentioned by crew, the FBI, and other passengers who would have thought of it. Or it was, and now after the documentary becomes an issue?
As for the partition itself, I can't imagine this would be the case on every balcony; unless it was a safety escape route aft or forward if inner the hallway was impassable. Sounds like a security nightmare since some people sleep with their sliding door open for the breezes. It could've been a feature of connecting cabins, in which there's an inside door to connect the two if you're traveling together. Obviously you can lock it from both sides at any time and leave it locked if you're not traveling with your neighbor. But cabin 8564 isn't a connecting one, at least curretly. The ships are refurbed so maybe it was at one time. Either way, this strikes me as odd.