Have you ever thought of volunteering? Back in 2009 when I was still building and on very tight budget I asked the same question here. A fellow RVator from Fort Lauderdale (thanks Charlie) gave me an idea. S-n-F needs a lot of volunteers from help on the field to flipping burgers. They have their little perks after the show and during the show if you put required amount of hours.
It's probably too late for 2013 but there is always next year. I did a little write up on my volunteering experience here
http://www.vansairforce.com/communit...light=Stoodges