Passengers with special requirements need to make the preparations and inconvenience themselves, not others. If it means shelling out the cash for an empty seat or not traveling alone so that they and their travel partner can choose seats that prevent such issues from happening, then they need to do that. I'm with the woman who refused to switch with her husband due to his anxiety- why should someone be expected to inconvenience themselves due to a lack of planning on the part of someone else? Whatever happened to personal responsibility?