Chcago Tribune Printers Row Lit Fest

Has anyone ever been to the Chicago Tribune Printers Row Lit Fest? Our son is a grad student at the U of C. He went to this the last two years and invited us to come this year. We are going to go, but I'm wondering if it includes opportunities for wannabe authors to sell their works. Should I bring samples, one-sheets, business cards, etc.?

Or is this more of a trade show for established writers and their publishers without any real opportunity for a new writer?

Thanks,
NDG