In an effort to unlock as many vendor factions as possible (to have as many 200 cap pools available each day), I went out of my way to head to Harper's Ferry early, as there is a vendor faction unique to this location. However, upon arrival, I could not find a way into the walled-off section of the town, where I believe the vendor bot resides.
The only way I could feasibly find in were several level 3 lock pick doors (which I am too low level to pick), and several large red "garage door" sized entries that were sealed and could not be interacted with. I'm aware that this location is tied to a main story questline mission (which I have not reached yet), but I was under the impression that a specific location/building inside Harper's Ferry, not the whole walled-in area, was locked out to this. Is there a way to enter Harper's Ferry at this point?