Very true. At least this one opened here the same time as in the US. For Serenity I had to avoid spoilers for several months, even though I saw it on its opening day here in the very first showing. I managed to remain unspoiled, but that was due to a Mad Moody-like constant vigilance and a total avoidance of Firefly fandom. At first it wasn't so bad, because while it had premiered somewhere, it wasn't in US cinemas or something, but then after a few weeks some of my flist blithely assumed that everyone who cared about spoilers would have seen it already.