Depending on how much travel you do, it's really not that hard to figure out the different fare class codes on the plane tickets. Different airlines use different letters to indicate First Class (F, P, usually), Business, and Economy class tickets. I used to work for United Airlines and I fly mostly on Continental so I'm used to their codes, but you don't have to be a seasoned traveler to figure it out!

Before leaving the counter, the contestants already check that their boarding passes have the correct destination, time, gate, etc. Don't know why Azaria and Hendekia didn't ensure they had the right tickets before they left.

Hopefully you two can get upgraded to First or Business class! Teams can get upgraded by the airlines as long as they just pay the full fare economy not any upgrade fee.