Possible Clues:

• 7/4 parties, briefly
• Things associated with pits and spits, briefly
• Backyard Jul. 4 events
• Events with badminton and boom boxes
• Patio activities, for short
• Patio meals, for short
• Times to enjoy dogs?
• Tailgating activities
• Things with spits and pits, in brief
• Outdoor meals with hamburgers or hot dogs, say, in brief