Ryanair jumpseating
UK:
The DFT allows pilots to use the staff channels 24 h (or 48cant remember) after/before any duty period for the purpose of going home. BALPa actually had an extract ofthis text in on of their glossy magazines. Most security staff don't know, used to carry the DFT text with me.
In most other countries you get invited to jump queues (also at security).