Extremely unlikely. Movie would be a long way from having special effects completed or even editing done. In theory there could be a rough print out there somewhere that would spoil plot points, but my guess is it is not on a connected server yet.
So not sure how many people realize this, but in the current age of technology, movies come to the theaters on glorified SD cards. There's a LOT of security behind these cards to ensure they don't go anywhere, but as they are being produced, I'm sure the file that contains the movie has to be available on a hard drive somewhere. That's why it's much more likely to be Pirates 5 or potentially Cars 3, but extremely unlikely to be something like The Last Jedi.
But, it definitely seems like an improved ticketing structure, and still a great value for concert and park day + water park.
