I saw the show on Friday and agree with most of what has been said (although I actually liked the score for the most part). The book is incredibly weak. Kong is amazing (the serpent, not so much - hopefully they smooth out its movements before opening). I guess it may be over-choreographed, but I really enjoyed the choreo, so I didn't mind.
I loved Eric William Morris's performance. I mostly like Pitts, but sometimes I could understand her when she was singing. I thought she got drowned out by the orchestra quite a bit. I also think they tried too hard with the character of Ann and made her too "plucky." I mean, the song "Scream for the Money" is literally about Ann, an actress, being paid to follow a script, which includes screaming, but not wanting to scream because she doesn't want to appear weak? I think? (Like I said, I mostly liked the score...but not that song). I liked the ensemble but wish they had featured more of them.
I sat in the front mezz (row D) and felt like it was the perfect spot to see the puppet and all the effects (especially the boat). I could also see the appeal of sitting in the front couple of rows of orchestra just for the part where he comes up to the front of the stage.
Question: I sat house right, and in the scene immediately after Kong kidnaps Ann, and they have their first "conversation" only to be interrupted by the serpent, Kong was completely obstructed by the screen (also, was that supposed to be glass? It definitely looked like a glass wall that had a jagged broken section, but I don't know why that would be on Skull Island, so maybe it was supposed to just be a cave). Anyway, on house left, could you actually see what was happening between Kong and Ann? Because I could only see Ann.
Also, I really hated the ending. And I don't mean the ending of the story, I mean the actual final seconds of the show.
I was impressed that they didn't have many issues for a first preview. Someone upthread mentioned a woman being suspended in air for a few seconds before actually falling. A couple wardrobe malfunctions (Pitts' wrap dress came undone during Queen of New York; she tried to re-do it one handed, failed, so it gaped open for a bit before she had a chance to close it properly; there was also a hat that flew off a dancer - possibly during Scream for the Money, but I could be wrong. She picked it up and held it). There was a moment where I thought someone missed a line during Bringing the King. Carl sang a line, then gestured toward Ann, but she didn't sing, then after a few bars he started singing again. So I don't know if Pitts missed her cue, or if Morris messed it up, or if it was just a weird bit of music.
Anyway, I'm glad I saw it. I had a good time. I'd say it's worth seeing once for the puppet. I honestly have no idea how it will do. During intermission, there was hardly any chatter in the bathroom. I didn't hear anyone say "that was so good!" I did hear someone say "So that's disappointing." When I left, I heard a little boy (maybe 10/11ish) say it was "really dramatic." I'd imagine it would never be able to tour. I am curious to hear if they make any changes before opening.