I went to the screening last Monday and overall really enjoyed it! The reviews that name Elgort as a weak link surprise me because a) I thought he was very charming, his scenes with Zegler were a highlight and b) I thought there were other issues to the movie. I wasn't a fan of Peck's choreography in CAROUSEL (Kenneth MacMillan stan here), and while I thought his work here was much better, it still didn't hit the high notes that I had hoped it would. The dancing itself is very impressive (the whole cast really leaves it all on the screen), but the choreography itself wasn't as focused or structured to me as the Robbins/Gennaro original. There's a moment at the end of "Cool" where Faist, after a very "real, gritty" stare down with Elgort, buttons the number with a big, jerky dance move that just came off as odd. However, if you loved the clip of "America" I'm sure you'll love the rest of the choreography. It's very similar "high energy/everything at an 11" type of movement.
I also was disappointed in the final scene. Spielberg lets so many other dramatic moments take a minute to land (Anita at the morgue, Valentina's final scene with Tony), that the final Maria speech ultimately felt rushed to me.
That said, when the movie works, it works astoundingly well and there are plenty of new touches that are just fantastic. Without giving too much away, there is a new, wordless scene that uses music from the "Somewhere" ballet and the whole 2 minute sequence put a smile on my face. I'd argue that CHICAGO and HEDWIG are still the best movie musicals of this century, but WSS reaches some amazing highs. One thing can't be debated, though: believe the hype about Zegler. She is astonishingly good in this.