Everyone is focused on the film... the reason for a closure would most likely be the re configuring of the cue line. They are supposed to be enhancing the blank, bland hallway that is the line, in addition to redesigning it for the addition of the 3rd theatre. Who knows what kind of heavy construction that would take, or how those plans have changed since the initial announcement.
I hope its staying open (I'll be there the first week off Feb) or it gets pushed back, which is also common, but I am certain that the film alone would not require the full closure..
One other point... if they change they film, and they do it 1 theatre at a time... then the 3rd would open, with the new film, and the 1st would close for change over, but that would leave the 2nd theatre showing the old film?!?!? So you would have 2 different films showing at the same time. That would cause a nightmare management situation.