Add me to the surprisingly long list of people who saw this today (or probably yesterday by the time I finish typing this out) and to the list of people who LOVED this show!!!
One note before I get into each act is that the setting definitely reminded me a lot of "The Wedding of River Song" from Doctor Who, where all of time happens at once. I loved it in that episode and I loved it here too! It's such a fun and creative opportunity!
From the very first moments, between the opening newsreel and Gabby Beans' incredible first scene, I knew I would love this play and I also immediately saw how someone could hate it if they didn't buy into the schtick. The first act was BANANAS and it just worked so well. Beans effortlessly slipped between her different personas and really elevated the whole thing. The puppets and puppeteers were AMAZING and the whole family did a good job too (although none of them really stood out to me). It was campy and fun and just worked for me.
The second act, sadly, fell flat. Beans was once again my favorite, although Priscilla Lopez was wonderful and definitely elevated the act. The set was a standout for this act as well. I can't quite pinpoint what didn't work about this act because it felt so oxymoronic in nature. It felt too long and not long enough, high energy and boring, overstuffed and understuffed, but mostly just confusing. It just didn't click.
However, the third act more than made up for it and I walked away loving this show. The whole beginning with the food poisoning and the rehearsal was so confusing, but in a good way because it comes around and just punches you in the gut. The tonal shift worked well and the actors executed it so well. The set was once again incredible and Beans was once again my favorite, but Rosyln Ruff and James Vincent Merideth got a chance to shine as the Antrobuses. The last sequence, when the substitute actors come back in and the refugees cross the stage, was just such an incredible synthesis of performance, direction, staging, set, and lighting. It was so impactful and by far my favorite scene in the whole play. I did also enjoy the very last Hadestown-esque scene (although I, of course, acknowledge that this show did it first) when Sabina resets to the top of act 1. It works so well in Hadestown and worked well here.
TL;DR: Really liked this show overall. Beans is the standout. Act 2 didn't work for me, but the campy, bananas Act 1 and stunningly moving Act 3 more than made up for it.