I am guessing you have had the distinct, uh, pleasure of Pride and Prejudice and Zombies? I finally saw the film version a few years ago, and from what I remember it was huge chunks of Austin (or Austin-sounding words)... plus zombies.

They also don't have to drink human blood if they don't want to.

Blood drinking (human or animal) is literally the definition of a vampire. I'm getting a weird Twilight vibe from this bit.