I wouldn't say it's pretty easy, but I just think of how much I will be thanking myself for not spoiling parts of the film and watching the movie unfold in front of me. I watch all the commercials and trailers but I won't watch the 12 clips IESB posted. I have never even watched the Prologue. I want to go in as fresh as possible. And when it comes to reviews, I'll just check to see how many stars the film was awarded.
What makes things a little bit easier is the Non-Spoilers section of TDK is pretty active compared to the other Non-Spoilers section of other movies where it is usually just a ghost town. Granted, a lot of of that has to do with the Tusi, but still.