The Tapas 9 booking note is mentioned in the PJ files.
Louisa ... Coutinho was receptionist at the Tapas area and gave her statement on 8 May 2007. She says she made the bookings and her statement says that during the interview she provided a book with the reservations for the Tapas restaurant.
She states that she made the block booking because it had been explained to her that the group had children nearby and wanted to check on them regularly.
Then we get into speculation zone. I can see nothing in the file that is a note with the bookings explaining that these are authorised on the basis that children are nearby. Whether that piece of information is accurate is up in the air. However, it is referred to in Amaral's book as well as Kate's, and it happens to make sense. But you decide.
The odd part is that Louisa C says a thin man with a child, who was in the T9 but was not Gerry, made the booking, and it was on Sunday (29th). In Rachael's rogatory statement (made much later of course), she says she made the block booking, on Monday (30th). Take your pick.