Possible Clues:

• Political campaign made up of a series of short appearances
• Electioneering trip involving brief visits to many places
• Instrument to put an end to 24 across with brief visits
• Choose the Guardian's first game in case of brief visits
• Produces music at bar for soldiers dutifully going overseas for a quick overview of the local attractions
• Mouthy type from bar goes to old city - it's a journey the politician is likely to make in no time
• No peeping allowed during this journey?
• Event on a train
• Progress constantly interrupted with warnings to exercise less than 60 minutes
• Blow-by-blow description of calls?