The last time I looked US Airways, United, and American charged $100 per person to change a booking and Delta charged $75. Sounds to me as though the $400 credit from RCI was based on these figures so there would be no money lost on the air fare.
Exactly. That's what I meant. The $400 RCI gave Alfred was to cover the change fee on the 4 tickets.
If Alfred worked with a travel agent, I hope the agent is already working with him on this.