These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Special Effect Failure: Mostly near the end when trying to show up the supernatural nature of the vampires. Plenty of cheap special effects. The DVD edition, with its cleaner video, makes these moments much more obvious.