T2 open and also not open, which is typical Panama.

Open: Terminal Two is servicing a few flights, mostly smaller carriers flying to Colombia and Venezuela.

Not Open: Aside from accessing the gates, nothing else is ready - no restaurants, no lounges, probably not even the toilets.

Tocumen is my most frequent airport. If going through Immigration, go to the stairs on the opposite side of the Duty Free Strip Mall from the stairs most convenient to your flight. The lines are usually much shorter.