Possible Clues:

• Press probe leader of elected party
• A doctor taken with men in military vehicle snubbed lively gathering
• Boy Scouts' international gathering
• Lively celebration
• Spree where lad of 14 meets more troops?
• Large and lively party
• 'Gala get-together, of scouts say (8)'
• Celebration, seeing crowd wave to sweetheart
• Lively rally
• Party's plight supported by English leader