Gleaned as much from this thread as well but there doesn’t seem to be a definitive answer on whether they are in fact AC specific. Add communication as another YYZ failing.
Originally Posted by
TheCanuckian
My understanding—and someone can correct me if I’m wrong—is that the ”holding pens” are AC-specific (so United passengers can just get into the line at any time).
I am taking someone to T1 for a 7 AM departure tomorrow. She will not be checking a bag, has no Nexus and no status, and is a US citizen. We plan to have her there for around 4:30.