We've seen or heard about extravagant marriage proposals.  From the guy who popped the question at the movie theater in his own movie, shown on the big screen to the flash mob proposal at Disney.  Arvin choose to propose to Alex on board a Delta Airline flight.  It's where the couple met, so it seemed only appropriate for him to take over the planes microphone to pop the question.  Luckily she said yes, or that would have been a really long flight.  And lucky for everyone else, champagne was on the house.