Have gone solo to all those places before and echo most if not all the advice given already. Yeah, the walk out can feel a little sketchy but its mostly people just trying to earn a buck. Once in a while you'll see someone really f'd up and trying to cause trouble.
at times, it's more fun sitting at the gate whit a red stripe watching the action than it is inside.
If I ever feel sketched out or think i have "eyes on me", I'll stop at a barrel chicken guy and have a cup of soup or water and chat for a while to feel the situation out.