If we assume that the couple who were sat at one of the restaurant tables by 9.15pm who were talking about Madeleine McCann having gone missing from the McCann apartment by that stage - they must have got that information from someone else!
This begs the question, did such an informant speak to the couple directly, or in confidence, or did the mystery couple overhear others talking about the disappearance of Madeleine, and if so, who was the informant, and or, who was talking to whom at the time the 9.15pm couple, overheard what they overheard?
If such an informant did not speak directly to the 9.15pm, couple, is it possible that the couple themselves gleaned such information as s result of eavesdropping a conversation, or a series of conversations which included the involvement or participation of one or more of the tapas 9 group?
It is imperative that, (a) the Ocean Club Executive identifies the couple who were sat together at a table talking about it, (b) that police find out from them, how they had come about this information so soon in the evening, and whether someone talked to them directly about it, or whether the information was gleaned by eavesdropping the conversation or conversations of other people, and if so did such people belong to the tapas 9 group, (c) find out whether such an informant had themselves overheard someone else talking about the disappearance of Madeleine, and the circumstances in which that information had become circulated?