Tipping - ClubAcela
Is this required, encouraged, whatnot? I just saw an awkward encounter where it looked like the attendant was waiting for something when letting the passenger board the elevator to the tracks but the passenger seemed to not realize. Don't want to be in that situation in a bit.
Normally I just go down to the concourse level in PHL to use the Keystone but today it's a madhouse and I want to avoid it on my way to 2254.