I don't want to spoil your enthusiasm about the show, but I have attended it faithfully until one year ago and decided that I wasn't going to drive 3 hours to see a flea market (Murphy excluded). In fact I have expressed disgust with the promoters about the progressive degradation of all their events, and I'm confident that I'm not the only one who feels this way.
The first couple shows were among the best I've attended--- quality dealers from up and down the mid-Atlantic, but now the promoters have the mindset that just because they have a "gun show" they can attract the public and collect attendance fees despite the fact that they are more flea markets and craft shows than gun shows. Be prepared to see plenty of prints of WW2 planes, laptops, jewelry, and rubberband guns which have replaced the original quality dealers who came and made the show worth the admission fee.
Odd--- I can remember in the not-too-distant past that the promoters' website stated "Guns and gun-related items only"-- no longer !