After my last experience with this show, you couldn't pay me to go. Add another hour to your trip to get off the interstate and to a remote parking spot. Harrisburg is basically bankrupt, the mayor hates the NRA and tried to put the squeeze, I call it extortion, on them for a "donation" just to allow their off duty police to work security. Some may disagree but I refuse to go to this show until the NRA moves it to another location outside the city. It's not only a nightmare traffic wise but the facilities are a byzantine mish mash of buildings, afterthought additions and tight quarters. YMMV.
http://www.pennlive.com/news/2016/01/harrisburg_forbids_police_offi.html