Yes, you can use Events in conjunction with career fairs!
Since career fairs are typically hosted by the school using the platform of their choice, you can use their systems to collect RSVPs and run the video conference. Then, you can create a mirroring event on RippleMatch (without the video conferencing link) and use RippleMatch to handle check-ins, follow-ups, and data tracking.
See more on how to set up this type of event here!
Having students check-in to your event through RippleMatch during the career fair will ensure you collect all of the data on your attendees, allow you to follow up with them afterwards with a job application or email, and track their information as part of the analytics for the event right alongside your other events on RippleMatch.