Repeated comments about
I wish they had more from the crew though
Whilst the USA is more "publicity" orientated than the UK, I really cannot see the crew being allowed to comment fully until all investigations are complete... probably as per NTSB and Employer rules.
It was a "very early" documentary (1 month post incident), and Pan Am has had over 50 years to get the facts established
Has anyone received an answer as to why the cabin crew and passengers were not informed that they were ditching and so did not have a chance to don life jackets before impact?
Maybe watch the program again

Ditching procedures are designed from Cruise, with appropriate decisions and briefings. Certainly my airline has no "short notice" FD calls for an unexpected ditching. As stated above, if there had been such a call, no doubt the majority of Pax would have known where their LJ was, and in the event they did find it, would then have inflated it

Which in some circumstances could have caused significant loss of life...
You might ask "would it have been better if the crew had made an ad-hoc PA". I would suggest not - again, the program seems to indicate that the response to the one FD PA by the CC was text book with the "Brace Brace" calls. Lessons will be learned from this accident, but until then...
NoD