Mark Saunokonoko spoke to Joe Moura from Boston USA in the 'Missing Calls' podcast. He went to Luz in November 2007 at the request of CBS news in the US. His mission was to investigate the disappearance for 48 hours and a documentary was produced.
https://www.youtube.com/watch?v=ItbwWRSfcxwMoura's conclusions were that Jane Tanner's story was 'erroneous'. probably because the Tapas staff told him that the group's account of their checking routine wasn't true. Moura, who speaks Portuguese, went to the Ocean Club as a guest for two weeks. He spent the first week hanging around the Tapas getting to know the staff. He claims they told him no-one left the table to check the children on 3rd May. He also states categorically that they couldn't see the patio doors from their table as they claimed.
His other conclusions are that the child is dead and that she was abducted. He says the parents didn't have time to dispose of a body.
The Missing Calls beginning 1:28
https://omny.fm/shows/maddie/the-missing-calls?in_playlist=maddie!podcast