It got a pretty bad critical reception, actually, ever since it premiered at the Venice Film Festival with Waltz and Winslet getting the better mentions. I haven't seen the movie but I'm interested in seeing it just because I think Polanski is brilliant and I like some of the cast, but I agree that the play itself is sort of thin and it only works if you have a killer approach that finds ways to connect to the audience *visually* as well as narratively. This was the problem with the DOUBT film, its idea of creating a cinematic vision was to use tilted shots, it didn't work out. It doesn't look like CARNAGE works out either.
I also think Foster and Reilly are utterly miscast, but again I haven't seen it.
"Some people can thrive and bloom living life in a living room, that's perfect for some people of one hundred and five. But I at least gotta try, when I think of all the sights that I gotta see, all the places I gotta play, all the things that I gotta be at"