We might be taking a group to Orlando and folks are various sizes, some Pooh sized. This is a budget trip so we don't really want to pay for two seats unless we have to, but I don't want anybody to be embarrassed when they get to the airport. I have heard of airlines refusing to seat somebody because they think they need two seats. Does it matter if we are a group and would all be willing to sit in the same row? Are some airlines better then others for this? Thanks guys.