Possible Clues:

• Ushers after intermission
• Does ushering work
• Moves to first class, say
• Moves from a table to a booth, say
• Does some ushering
• Moves from the back to the front row
• Upgrades to first class, say
• What usher does to a sneak
• Gives a better table, say
• Allocates new chairs to each in the course of breaks