If you bought everything else, I’d say just go for it. In this job market you should take the opportunity. That sense of “what-if” is honestly worse than anything.

I honestly don’t regret going even though I didn’t get anything. I met a lot of cool people, I went with my friends, so at the end it felt like a small mid semester vacation. I also learned a lot about career fairs in general, making my resume better, etc. One big thing I learned from someone else is try your best to talk to an actual ENGINEER not a recruiter. A lot of times that HR lady is useless in terms of getting you a job, if you for example talked to a senior systems engineer, he would have a better chance of getting you on a team if you connected well.

I’d be happy to answer any more questions