I saw in 2D (like the other 7 films) and wasn't disappointed.

Quote Originally Posted by 5FDP View Post
Not seen any of the Harry Potter movies but I am mildly curious about this one - do I have to watch all the others first?
Yes. This is the big finish but it is barely it's own film. It gives a newcomer about zero context as to what's happening, who's who or why; total assuming you've at least seen Part One of Deathly Hallows. But to people who have watched the previous films it's a great climax well worth the nine years to get such a unique film series.