If you fly into California for this event, there are several different airport options available to you. Those include:
John Wayne (Orange County) Airport (SNA) - 13 miles
Long Beach Airport (LGB) - 18 miles
Los Angeles Airport (LAX) - 37 miles
Attendees will need to find their own transportation to/from the airport. Once you arrive at the hotel/venue, there are numerous restaurants, and lots to do, within walking distance.