One thing that has not been mentioned here is the woman traveling solo's safety. Why wouldn't a woman want the staff (front desk, bellmen, room service, etc) or the guest behind her at registration to think she is being joined by her husband? I think that is a good argument to support Flyerwife. I am not saying to use it for fraud, but for commonsense and increased safety.

What do you think about that angle? I guess one could say that the female guest should still use her own MR number and just mention that her husband will join her. Thanks for your thoughts.