Possible Clues:

• Scouts' gathering
• Scouts do stick first of badges on right sleeve in the middle
• Setter weary before end of house party
• Big party or, put another way, major bee
• Person wittering on about marmalade, perhaps, before English party
• Rally crowd wave by end of stage
• Pack gathering outside primarily occupy rally -- this one?
• Party crush -- put up with being at back of queue
• Large scout/guide rally
• Be stuck with headache, having little energy for celebration