Have a shot to meet face-to-face with a publisher? Don't blow it! Patricia L. Fry at Absolute Write has tips on how to make the most of it:
Before the event:
Find out which publishers will be there.
Do a little research to learn what type of books they publish and what titles they have published lately.
Prepare and practice reciting a brief description of your project. I call this your thirty-second commercial.
Create a promo package including a brief synopsis or overview of your proposed book and information about yourself. (What is your writing background and why you are the person to write this book?) Include your complete contact information: full name, address, and phone number as well as website and e-mail address.
More here.