That sounds like me, if a critic gave it a horrid review, I find that I usually like the movie. But I have a low sense of humor and am easily entertained. Heh
There's nothing wrong with Horror/action/sci-fi, I watch it all the time and it hasn't warped my mind...and I can pay anyone $20.00 to say so! :-)
If its anything like what I'm hearing the audience is like, it should make for an entertaining evening ;) Check out the thread on Fark, people are treating it like the next Rocky Horror Picture Show.