A lot older in the pictures/video sequences, but that's definitely Inspector Lara.
It seems that Blanco is still around and doing lots of films.
So, we've only got to find out who Olga Montes is.
"Gatti rossi..." is obviously her only credited role, so it's gonna be hard.
My guess is she's Peggy because that's the biggest of the unidentified roles - and all the other tourists are credited.