[ethbr1]

Belated reply for posterity: another cheat code for job fairs is pre-researching the companies there.

Typically, attending companies are listed (or you can ask an organizer for a list). Do some quick searching and type up a summary.

Company name. What they do. 1-2 questions. Emphasis on companies you've never heard of!

You'd be amazed how many doors open when you walk up to a recruiter for a small, specialized company and know exactly who they are and what market they're in. (Remember: that poor person has probably spent all day explaining that to everyone else)