if we take the first on the alphabetical list
http://www.mccannpjfiles.co.uk/PJ/ALEXANDER_SOUSA.htm and see what type of questions were being asked.
"She works as a waitress in the Millenium restaurant, OC. She says that this place is about 500 metres away from the apartment block where the events occurred."
I find that first sentence totally biased against the McCanns "500 metres away from the apartment block where the events occurred" The witness would not know where the events occurred. That has to be the words of the inspector IMO.
OK i would accept "500 metres away from the apartment block Ocean Gardens block 5G." but did she say that? Why did she say 500 metres, was she asked how far away is Ocean Gardens block 5G from the Millennium?
Next bit "She works from 16.00 to 24.00 daily with the exception of Mondays and Thursdays which are her days off. Her functions are to attend to clients at their tables and on the balcony."
So she wasn't at work that night is that right? No hang on she came there. "She heard about the events on the same day at about 22.30 when she was at the restaurant bar where she works, relaxing with her mother and sister." OK so she has an alibi.
There might have been a question about how did you hear about it?
And did you participate in the search? "her sister did take part in the searches, together with her boyfriend." No names for cross referencing so not really gathering evidence. Who was her sister, who was her boyfriend, do they admit going out on the search? Was she telling the truth?