Barnstorming on an Invisible Segway

Events for new members/attenders that just involve mingling work best if you have 'old' hands along too. That way new comers feel welcomed by the community rather than just the organsisers. And the old hands can demonstrate the behavioural norms too, rather than the newcomers developing ones that clash with the old norms (always assuming you aren't trying to change the old norms).