You guys should head to Glamis and partake of the 13th Annual Veterans Day ceremony at the flagpole. It's an event like you won't find anywhere else. Bring some tissue, something seems to be in the air down there while this event is taking place. Happens every year on the Saturday of Veterans weekend at 11:11AM.
When that's all said and done and you've had your fill of the dunes for the day round about dusk they hold the Marine Corps Birthday and cake cutting ceremony down at Wash 22.
Both are awesome not to be missed events hosted by duners for duners.