My family is having a get together soon and I want to help promote it. What else can me & my cousin do?

We've already put adds in news papers(3 so far), posted it on the web(he did that), put up fliers in 4 counties(16 towns and maybe a 100 power poles), got airtime on 2 radio stations to promote it and hired a plane to fly around with a banner on the back.Now what can we do more? We Have family across the USA from Alabama to New York to LA to Canada, Mexico and the Middle East(military). Want this to be the biggest family reunion of all time. It's a promise he made on his mom's grave after she died earlier this month. Please no "so sorry for your lose." Need ideas.