Originally Posted by
SkyTeem
Someone else advised to explore the tunnels to the other gates - to my knowledge, once you leave the A gates, you can't get back without being escorted. If someone knows how to get back from the satellite concourse similar to T2, please let me know.
An expert will no doubt confirm the exact ways to move around the terminal, but I believe you can walk back to A through the tunnels having visited B or C.