Exactly the opposite! You should find other burners, get to know folks, meet and greet and attend a few parties and gatherings. Local veteran burners will have ideas, perspectives, resources and advice that you can't find anywhere else. Burning Man is not always the Main Event!
That said, we went to Burning Man cold, and did fine. But we missed out on some great happenings here in Utah, like the Sun Tunnel regional (we can't do that officially anymore, the artists said "no.") And we've have known a few things we learned by trial and error.
I'm too jaded to think up a good sig-line. Need more coffee.