What guidelines should a job seeker follow to ensure they are successful at career fairs?

Pre-register for the Fair
Research Registered Employers
Take Multiple Copies of Your Resume
Consider Bringing Your Portfolio
Wear Appropriate Attire
Develop Fair Strategy. 
Prepare for Interviews
Manage Intangibles
Network With Everyone at the Fair.
Follow-up With All Key Recruiters

Hope this helps!

Think it's rice because in many countries rice is the main food so it can be traditionally served all at once.

The most common stereotypes could be that boys don't cryboys don't get emotional boys are never as mature as girlsboys are lazyetc.