Taking the JetBlue Red Eye. Leave at Midnight. Arrive JFK at 6:00 AM. One Plane. No Changes. All Good. Except. You’re in New York at 6AM with Check-In Not Until 3PM. What to Do with 9 Hours and a Very Tired Family of 4? How About a Parade? The 111th Annual Independence Day Parade in Brooklyn? Cobble Hill and Carroll …