This isn't an actually an event, but I've done some research into meeting in Orange County briefly. Sadly (gladly?) I don't live there anymore so I can't help you organize this, but I thought I would share the possible meeting places I found. There's always the option for something such as Panera bread as a restaurant that has decent food, and wifi, with several location throughout Orange County.
Also if a more serious classroom type meeting is planned the OCPL has some rooms available, I know of one at the Heritage Park branch in Irvine which seemed well located, but often booked. http://ocpl.org/16brnch.asp
The Irvine Ranch Water District has some meeting rooms at it's offices a little further south, and some info is available at http://www.irwd.com/FreePrograms/meetingrooms.php. I don't know what the internet access would be like there, if available at all.
Hope this helps whoever leads Orange County on from here.