It's what you said. It's a conceit and Tarantino runs with it. It doesn't need to make sense, and in the moment it really doesn't matter.
sure it did.... to have no military inforcements in France, when HITLER was attending a film premier was eye roll inducing... I'm sorry, but that is the biggest load of crap.... not to mention they allowed people into the theater, who were strangers, and didn't search them? give me a break....
I would normally be like "hey, it's just a movie, and serves to move the story along" but like a poster said above... they go to such lengths to explain every other little detail... how this guy got his nickname.... how the film is extrememly flammable, etc... to just be like "go with it" seemed lazy... almost like QT got to the ending in his screen play, and just wanted to finish it...
oh, and it just so happened that no one tried to use the doors for the ten minutes they were locked before the film interuption? right?
So basic QT story telling, concentrate the plot on insignifigent areas, like the English solider meeting the Basterds, or someones accent, but overlook things such as military presense and the gun shots in the projector booth that everyone should hear.... the second set happened when there was no guns noises on screen... so, there is no way the audeinces didn't hear them
And it's good to see Hitler hired two Stormtroopers to keep guard outside his private balacony...
I think the movie itself sets itself up for being a dissapoinemnt because the first two chapters are so strong.... followed by sub par story telling after that....
I really wanted to love this film...