Possible Clues:

• They're on board that ought to be in the Rotunda, by the sound of them
• Pullman car features
• Ships' moorings
• Beds in cabins
• Beds on ship or train
• They may be upper or lower
• Beds in ships or trains
• Tournament slots
• Deliveries, we hear -- they're for rest of passengers on board
• They're born on board, by the sound of them