My family of four is being sent from DFW to Barcelona (via Madrid) this summer as part of a contest I won. I'm sure we will be booked in economy. Is there any way to move ourselves to business using miles or working with the travel agent? I'm happy to go regardless, but would love to arrive relaxed and refreshed from a lie-flat business class experience! We will almost certainly be flying AA. I have no status with them but have 250K + AA miles.