I don't believe the McCanns did it precisely because of the logistics involved. However, of course they could sit there and act normally. It's been done before. Unless you know the McCanns I don't understand how you can make such ascertions? Also regarding Matt they could be hoping that he was the one to discover her missing because it would look more authentic.
IMO it is utterly unbelievable that both - not just one - but
both parents just by sheer coincidence happened to have exemplary acting abilities on a par with oscar winning actors who make a living out of that skill.
In fact so much so that everyone - including family liason officers, counsellors etc etc etc were completely taken in by their brilliant performances day in day out.
Apparently even though Matt's intervention could have completely ruined their plan - it didn't phase them in the slightest - and they just carried on as normal as if nothing untoward had just happened - or was about to happen - if Matt
had discovered Madeleine was missing.
Too daft for words IMO.
Anyone who thinks that the McCanns could stroll off to dinner and behave completely normally after what they are alleged to have just done to their own daughter - has no ability to put themselves in someone else's shoes IMO. IOW - no empathy.