I saw this tonight. It was my first time at a first preview, and I wasn't familiar with the text beforehand. I am not a theater expert by any means, so please take this with a grain of salt.
It was....interesting. I LOVE Keri Russell, but I am just not sure about her stage presence. I think she might be one of those actors that is just better on film, with more close-up focus on their face and expressions, vs. needing to project the personality and physicality of a character into an an entire huge room. At times it felt like she was reciting her lines off a teleprompter.
Adam Driver was fantastic as Pale, and seems to truly fit this role perfectly. Brandon Uranowitz was GREAT as Larry, and David Furr (Burton) was very good.
It's weird, because I actually really did expect great chemistry between Keri and Adam after seeing all those amazing promo photos. They just look amazing together, you know? But it's just a first preview and they have weeks to work out the kinks so hopefully once Keri gets more comfortable that chemistry will have a chance to shine through.
There are a total of seven scenes, and one 15 minute intermission. After each scene in Act I the house applauded, but there was only silence after a couple scenes in Act II. I usually go to lively musicals, not plays, so maybe I was imagining things but the silence felt a little awkward at times.
Between scenes they played short, acoustic clips from 80s songs. I'm On Fire was one of them.
Matthew Rhys was in the audience.
I don't think this is really giving much away but if you want to avoid all spoilers then stop reading...
In the final scene Anna/Keri goes to burn a piece of paper in an ashtray. She tried striking one match and it didn't work. Tried a second and it also didn't work. Then Adam said something like "they're tenacious" and came over and took the matches and lit one himself. I have zero idea if it's in the script like that or if Keri just genuinely had trouble with them, but it seemed like a bit of a hiccup.
Something awkward also happened with the bow. All four actors bowed together, and then it looked like Keri was pushing Adam to bow himself, but he seemed to be trying to get her to bow, and she wouldn't/noticeably backed up, and they just kind of looked at each other then all four actors bowed again and then quickly left the stage.
It did not feel like the crowd had much energy, good or bad, when exiting. I sat in the front row of the balcony so it took awhile to file out then down all the steps, and no one was really saying much of anything about the show. Sometimes that can be good, like when you feel stunned (I felt that way after American Son's ending), but this was not that.
That's everything I can think of. Again, I am not expert, this was just my own experience of the show.