Just watched his Disney Treasure video with great interest as it was the same cruise I was on. His order of events is very different to what I remember though. According to him the first port was Castaway Cay before the only other port of Falmouth in Jamaica.
The reality was sea day, Cozumel, Grand Cayman, Falmouth, sea day and finally Castaway Cay on the final day of the cruise. If he's going to lie about things as simple as this, what else is he exagerrating and lying about.
Also he says you just have to watch a quick safety video before sailing whereas the reality is attending a full muster drill along with every other person onboard. And as I was on the same dining rotation as he was too, his order of restaurants that he said he went to were completely wrong too.