This is very logical thinking, that I commend as it is so rarely used here (harumph, excuse the cynicism). Really, the crucial difference between these two scenarios is that in the former there is money changing hands and someone is directly benefiting from maximising passenger space. In the latter scenario there is no such gain seen by anyone, and in fact they might see it as a punishment since Guatemalan meeting are known to take half the day. Just sitting through two, then, would shoot all your plans.