Going to CUN in April. I booked my daughters (and my own flight) and paid for both on my Chase MP (then OP) card. Two different itineraries - me from LAX - IAH, she from MSY-IAH. Then from IAH, we fly together (hurrah) from IAH-CUN. Is there any way I can get her first bag free or is UA firm about the "same itinerary" business. And, if she does have to pay the $25/bag will she have an option to do that online pre-airport or does it have to be at the airport? [I realize my bag should be free, at least that is what the promotional material say.] P.S. Three nights free @ Hyatt Cancun thanks to Chase Sapphire Card!