As you have to show a boarding pass to access the interterminal train, I suspect you may be stuck at T2. (I suspect they'd not allow you airside at T1 if you took the red shuttle busses landside - not to mention what a hassle.)
Originally Posted by OP
The airside elevated Aerotrén APM (Automated People Mover) moves only those connecting passengers with identification and boarding passes or other evidence of ongoing flight between Terminal 1 and Terminal 2. It consists of two to four cars, 25 passenger (with baggage and hand carry) capacity per train, travels at 28 MPH / 45 kph over the 1.9 mi / 3 km range. Time en route is 4:40 (min), dwell time in each terminal is 60 seconds, time between trains is 10:45 (min).
Originally Posted by
nyc325
I'll be arriving in Mexico City at around 4am and catching a domestic flight at around 9am. Both flights are AeroMexico, so in and out of Terminal 2. But I have Priority access to United's Red Carpet Lounges - in Mexico City it's located in Terminal 1.
Will I be able to head over to Terminal 1 to spend some of those hours in the lounge or am I stuck at Terminal 2?