Mule Day (really) is held at Callaway Plantation. It's actually a lot of fun with food, crafts, mules, and a very small car show. Maybe 10 vehicles. I asked if my '88 GT was welcome and they said yes. Not so my wife's 2011 Mustang.
Soooooo, if you want to show off your Fiero, arrive at Mule Day by 0930.
I probably won't make it this year, but from experience I can tell you it's fun.