At one point on the road someone asks: 'has a zombie ever fired a gun in the history of cinema?'. Mike replies "no", but the truth is George Romero incorporated at least two instances of gun-toting zombies in his films: The first was 'Day of the Dead' (1985) where the now-famous zombie Bub is the first zombie to ever hold and fire a gun. The second instance was 'Land of the Dead' (2005), where there are multiple zombies using an assortment of firearms.
The "XXX" sign seen off the highway is for Dreamers at 2705 Interstate 35 Frontage Rd, Hillsboro, TX.
Part of a group of 2010s slasher films that take place at haunted house attractions. The other notable examples of this trend are Hell Fest (2018) and Haunt (2019)