I personally think they nailed the style all around (not just in the sets and costumes). But every way possible. I consider it a terrific success on that level.
I went back and visited a couple of Rock/Doris/Jim Garner movies after that, and McGregor/Zellweger & company acted in the exact same style and vein. Problem is, those older movies are also a little difficult to watch these days, except as nutty nostalgia curiosity pieces... Plots are thin and predictable, reactions are overdone, etc. So I just think styles have changed drastically, and no one wants to see their "modern" actors work that way anymore. Too bad they didn't get the joke.
Just take a look at an old Rock/Doris movie today (AFTER you've seen DWL), and you'll see it's no better (or worse).
"Jaws is the Citizen Kane of movies."
blocked: logan2, Diamonds3, Hamilton22