You said no parent left the vicinity. Two Tapas employees said a man left the restaurant for 30 minutes. It could have been the child's father. If so he had lots of time to do whatever he wished. Russell had Gerry gone for around 20-25 minutes, which fits in;
He recalls that Matthew Oldfield left the restaurant at shortly after 9pm to check the children. He is no longer sure who went out first, but five minutes later, Gerry McCann and his own partner, Jane, went out, almost at the same time, to check the children. Jane could have come back first because she found Gerry chatting with a person who is also a guest in the same place, named Jez. He thinks that Jane only checked their apartment, being worried about ****. Then Gerry came back at around 9.25/9.30 and they started to eat the first course.
http://www.mccannpjfiles.co.uk/PJ/RUSSELL-OBRIEN.htm
The other statement is from an analysis of who was where after the alarm was raised (by a UK police officer), His conclusion was that Kate, Dianne, Rachael and Jane's whereabouts were accounted for. Any of the others could have disappeared for a period of time had they so wished.
I've always found this statement especially interesting :
------- STARIKOVA VITORINO (Russian citizen, with the telephone No "96635 ####) - kitchen assistant:
- Said that, yesterday, one individual, purportedly the father of the missing, left the dinner table where a group of friends (in number 8 or 9), for about 30 minutes. After having returned, a woman whom she believed to be his wife, also left the table, there having passed a few moments, all the guests left the table in question, except one elderly lady, who told her [Svetlana's] colleagues that that child had disappeared.
- During the time that she was working yesterday (between 14:30 and 23:00) she did not see any individual with blonde "rastas".
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