Leading up to the fancy date night in New Orleans, Josie's hair was straight. During the date her hair had some styling curls in it. Immediately after the date was concluded, her hair was straight once more.
During the "date," the helicopter that takes off from the field is different than the one that lands on the hotel.
When the vehicles drive into the hangar in London, the driver is still on the left side of the car, not the right, as they should be in England.
Billy's eyes are brown but her parents, Liam and Josie, both have blue eyes. Blue eyes are a recessive gene and two people with blue eyes cannot have a child with brown eyes.