I can cite the handler's evidence. I'm afraid John mat be mistaken because according to her father she exited via the patio doors and down the steps onto R Fransisco G Martins twice every day. Only two exceptions were mentioned when they all used the front door. One of these being when the children 'ran away' and were taken down the passageway afterwards. This was only mentioned after the dogs followed that route, however.
it can be confirmed with a certain degree of certainty that the missing child passed by that location, on that day or on a previous day.
http://www.mccannpjfiles.co.uk/PJ/ANTONIO_SILVA.htm
Kate contradicts Gerry.
3 May 2007
"After breakfast they got dressed and left the apartment by the main door. All children went walking. The veranda door was closed and locked; she doesn't know whether the main door was locked or unlocked.
At the flat they both bathed the children, and close to 6:00PM Gerry went to the tennis courts, soon after the children had finished their bath. They entered the apartment by the main door, with the key. She does not know if it was locked, and presumes it was Gerry who opened it. At lunch time they also entered by the same door."
http://www.mccannpjfiles.co.uk/PJ/KATE-MCCANN_ARGUIDO.htmI believe she is correct. It is safer to leave and return with 3 young children via the pathway to the main key door.