I could be wrong. In the past that day was a career forum where they would have little panels of people like chief pilots answering questions for a room of people and talking about hiring etc. Perhaps the person you spoke with misunderstood because you can ask the panels questions during these forums but it's not a career fair portion. Then the weekend was the days the airlines would have booths set up and take/critique your resume, etc. I just looked through the schedule and it's a bit hard to tell from it but it appears to be the same way as the previous years. If you're really interested in Alaska, I would do everything you can to be there on Saturday or Sunday in case friday isn't a day you can talk with them.