(at around 42 mins) The amount of froth in David's bottle varies during his conversation with Silvia at the bar.
One does not choose their in-flight dinner when it is about to be served. It is chosen when one makes their reservation.
In the end credits the word "Psychologist" appears as "Phsycologist".
The doctor tells Silvia that the scanner didn't show up anything unusual. He should have said the 'scan,' rather than scanner.