Just watched all three again, and I have to agree about Turks & Caicos. They definitely went all out to save a bit when it came to staging, and it isn't David Hare's finest hour and thirty five as a director. Page Eight is the best of the three. Bill Nighy leaks more understated charm than a tin of condensed gentility, but either he's 20 years too old or Helena Bonham Carter is twenty years too young. It's the Picard effect. Curiously he was only just 65 when the last film in the trilogy was made, but he looked 75.
It was funny, but it missed. If you want to build a character without showing every detail of their life from birth to the time-line of the film, then it takes planning, scripting and editing. I felt that tropes and cliches were just being plugged in. Made the whole thing seem lightweight. When there were dramatic scenes, they felt out of place: odd vignettes. That was true in the last movie as well.