My suggestion is to make the event more interesting and have something for everyone; spouse, kids activities?
How about having a few contests
1. Fastest person to setup a satellite and hit a signal.
2. Miss FTA beauty contest
3. Furtherest dish toss
4. Cooking contest
5. Most creative uses for a dish besides satellite reception
6. Art contest using a dish as a canvass
You can have something like "Sturgis" for motorcycles; now its
Sadouns for FTA.