dress code at these events is formal– I would thus go for a suit. There are no cases during networking events, therefore your goal should be to meet some consultants, make a good impression and ideally obtain the opportunity to follow up with them to later have a referral.
As tips, I would suggest the following:
- Arrive early, stay late – best moment to talk is when the event is not croweded
- Prepare questions in advance; if possible do research in advance on who is going to present
- Ask for a business card and send a thank you note after the event, asking if you could keep in touch in the future
You can find more tips on the topic here: