Possible Clues:

• They have a job managing craft types of criminal wasters around Dublin
• They look after passengers on aircraft and ships
• Ship's officers tie alien up as stowaway would be?
• They look after passengers on aircraft or ship
• Crafty types managing criminal wasters around Dublin
• Custodians or cooks pinching a case of red
• Carnival workers?
• Attendants on flights
• Shop VIPs
• They get the wine for Stuart's list