I have never attended this show, though the venue is a choice destination for our Spider on summer weekends. The Stirling Hotel (actually a bar and restaurant) has great food and craft beers, a patio, two outdoor bars, and a beer garden with bocce and cornhole games.
We are planning to attend this charity event this year. I suspect the competition is fairly low-key, and there is a Foreign category. It would be great to see some other NJ Spiders there, and hey, you might come away with a trophy.
Details here:
http://www.lhcommunitycenter.org/car-show-flyer.html
http://www.thestirlinghotel.com/