I was able to listen to company explanations at random, which was useful for researching the industry. I was able to learn about companies I didn't know and broaden my horizons.

The free talk time with other job seekers helped me connect with others with similar backgrounds as well as interests in the same field/industry.

Being Able to freely visit company's table allowed me to familiarize myself talking to employers.

Learning about other industries opened up new opportunities.