I've always thought there's a difference between who you book with and who's on your itinerary. Very rarely do I say I'm traveling with anyone unless we're stay

I've always thought there's a difference between who you book with and who's on your itinerary. Very rarely do I say I'm traveling with anyone unless we're staying in the same room. I guess these fares do specifically state that, but I have a very hard time imagining anyone at the gate would care, they're typically doing the bare minimum as they should.