Attending Law Fairs - Need Etiquette Tips as a Graduate

LLB and LLM graduate with only limited quasi-legal experience volunteering at CAB. I’m attending a law fair featuring a number of reputable firms and workshops, and want to make the most of it.

If you’ve ever attended or hosted such an event, could you suggest me some tips to best represent myself please?

I’ve researched all of the firms attending so I know which area of law each one is practising and so on, but I have a few questions:

1. Is it acceptable to give a copy of your CV to the representative? Or would these just go straight in the bin because everything is online nowadays? Should I just give them a small card with my LinkedIn QR code instead? Maybe neither and just apply online?

2. What is the best way to network? Should I take the cards/pamphlets they have and send an email thanking them for the chat after the event?

Any other tips would be fantastic, thank you all in advance!