Regarding the checking of the apartment ,I've copied some extracts from PJ interviews
"That around 9.05pm, the interviewee went to the area of the apartments. Notably to the area near the windows of all the children's bedrooms. That he did not hear any noise. That he considered that all the children were sleeping. That all the children's bedroom windows were closed, notably the windows that gave access to the bedroom occupied by Madeleine."
That after this check, he returned to the restaurant, saying that all the children were asleep. However, Gerry, Madeleine's father, went to the area of the apartments to check for himself if the children were asleep. That Gerry would have entered into his apartment and that he checked to make sure that Madeleine and the twins were sleeping in their bedroom, where it was quite dark. The bedroom door was left ajar. That five minutes later, Gerry came back to the group in the restaurant.
In answer to a question from the inspector, the interviewee says that Gerry will have gone to check at that time because he will not have heard the witness say that he had been there.
At around 9.25pm, the interviewee went into his apartment and Madeleine's apartment to check on the children. He states that the door of the bedroom that was occupied by Madeleine and the twins, was open and that there was enough light in the bedroom for him to see the twins in their cots. That he couldn't see the bed occupied by Madeleine, but as it was all quiet, he deduced that she was sleeping. That the light was not from an artificial source inside the apartment, but perhaps something coming from outside through the bedroom window. That it seemed to him that the shutters of the Master' bedroom window were open without knowing if the window was also open
www.mccannpjfiles.co.uk/PJ/MATTHEW-OLDFIELD.htm
Gerry's statement extract
"at about 21.05 the witness came to the Club, entered the room using his respective key, the door being locked, went to his children's bedroom and checked that the twins were fine, as was Madeleine. "He then went to the WC" where he remained for a few moments, left, and bumped into a person he had played tennis with and who had a child's push chair, he was also British, he had a short conversation with him, "returning after that to the restaurant." At about 21.30 his friend Matt (member of the group) went to the apartment, where his children were and on his way went to the witness' apartment, entering by means of a glass sliding door that was always unlocked and was located laterally to the building. He entered the bedroom, he observed the twins and he did not even notice whether Madeleine was there"
www.mccannpjfiles.co.uk/PJ/GERRY-MCCANN.htm