Possible Clues:

• Typical local jolly for old conductor taking time off with a driver from end of Christmas to Easter (1,6'1,7)
• Describes old conductor taking time off to take the coach to Kerry for the holidays, for example
• Graduate returns to America for stag do perhaps for electrician on a power trip, for example (1,6?1,7)
• Dublin Bus driver found on 46A in Spain on day off - that's taking work too far (I,6'1,7)