If anything happens to me, I do not anticipate that EP will be eager to open up more of the spaceport in my place, so I wouldn't recommend it unless you wish to stay in this small area.

From the map that I have seen, there are four main concourses, each with twenty-two to twenty-eight gates. I cannot imagine that they would have been so remiss as to simply leave a means of escape idling at one of the gates, but I will try to grant you access to the concourses in the event that I've overestimated their intelligence.