In US at recruiting events consulting staff is asked to write impressions about candidates they interacted with during the event itself. Main categories feedback is collected around are:
- Executive presence
- Verbal communication skills
- Interest in consulting
- Interest in firm (cross offers, cross processes, etc)
- Fit with company
- Fit with office
All personal data is collected through the application/registration/resume you send/give the company.
Treat recruiting events as real pre-screens that can help you get an interview or can lower your probabilities to get one.
Hope it helps,