If it wasn't a flattened Photoshop PDF. They could open it in Acrobat and still do that work.As a graphic designer myself who works in an industry that designs a lot of posters and other marketing materials.
I only got one thing to say
Disney fukked up for giving them the layered InDesign file of that poster. They should've just sent that Hi Res pdf and let that be the end!
That's what I do all day ery day. Tear into ad agency work, and rebuild shyt proper before print.