When Phil and Mitchell get back to Mitchell's to get his wallet, Phil hands Mitchell a credit card from his wallet to break in through the window. Once inside, the shot immediately shows Mitchell putting Phil's credit card into his own wallet.
(at around 7 mins) When Luke pretends to be pregnant at the airport and Cam tries to wake up Lily, a member of the public starts to film the actors with his phone.
When Phil and Mitchell are on their way back to the airport, the scenery around them in the car reveal them to be driving in a northwest direction on W Pico Blvd (starting at approximately Manning Ave), which is heading away from LAX.