By Law, at least I would think so, the park would have no choice but to fence off the area to protect wandering guests who try to get "close-up shots" of the coaster. I would expect a decorative fence for the main walkways, and a black fence like the one near Intimidator for the rest of the coaster.
Also, the renderings were not exact as to what we'll see in the future. The coaster layout will still be the same I'm sure of it. But the rendering's main focus was on the coaster, not the scenery. For sake of time and money, some things were purposely left out of the model. Also, the entrance is still "concept" but what we see in the model is basically what they have in mind, so again, not everything is exact in the rendering.
Hope this helped
now off to college.