The female flight attendants throughout the scenes on board the aircraft are wearing their jackets and hats and the male flight attendants are wearing their jackets these would be removed after take-off and not worn again until landing as they greeted the passengers disembarking.
The Chappell Family were seated in Business Class, as this is displayed on the screen when the real life members of the family are talking, but the seats the actors portraying them are seated in appear to be Economy class seats and not business class seats.