So I can't tell where my Aeromexico flight is flying out of on Wednesday - TBIT or T3 - it seems like they schedule it out of T3 but it sometimes moves to TBIT. I seem to remember reading there's a way (post-security) to get to TBIT and gain access to the Centurion Lounge (since I will not be able to access the Delta Sky Lounge flying on AXM metal). How far of a walk is this? Worth it?