Ya know, one of the things about Pit Beef that I like so much (besides that its delicious) is thats its a really local dish, as far as I know, not served anywhere else. I did find it once, just north of MD-PA border in McSherrystown, but that’s really still local.
Crab cakes are Ok, but yu can get them almost anywhere now. I saw some on menus in Florida. Pit beef, in fact, is rarely on menus at all, you just get it from the pit in the local shop.
I would also agree that there would be little near the convention center. Its a locals not a tourists food.