Ah, we are again at the point zero. You assumed that the McCanns are non-psychopaths. How can you be so sure about it?
Psychopaths and egocentrist usually love attention, you know. And, to be honest if someone leaves their kid alone for the night again, after that kid asked "where you were when I cried last night?" well, the morals and mentality of such a person are highly questionable for me.
They drove to Fatima, they drove to Spain. Plenty of land to hide one little body.
Oh, but they could. They traveled around, completely alone. Nobody watched them. Not even media.
Smuggling little, blonde girls to the Eastern Europe is like carrying wood to the forest. Seriously.
Well, I can't think of many people who could concoct such a story and hide their child's body. They may have been able to do it. I don't think so.
I don't know the full details of the case re: Fatima and other excursions. How did they do it, then?
For me, an organised abduction seems very plausible.