Same advice from me. There are lots of people who get hired without going to the job fair. However, as you know, if you just email the application, you have no idea who to keep in touch with. I think most of the people who get hired out of the fair will say that they did the right thing by going there.
Keep us advised on what happens. We’ll help you through the process. Also try to use the discussion message board. You will find the link at the top of the blue column to the left. This one is where the junk emails end up. Mostly nothing of interest. The other one is more informative. There are lots of old archived messages from people in your same situation. Read what we’ve said to them.