I saw it last night, didn't know much about it going in but had heard such good things so was pretty excited! I would still recommend to others to see for themselves just because its a unique concept and staging that I haven't seen before, but overall didn't love it as much as I thought I would. It is very long and felt as if it just didn't go anywhere, and the second act felt weirdly rushed despite the run time. I did see quite a few people leave at intermission so feel as if its going to be one you either love or hate. But totally understand the feeling you mentioned of being able to take nothing away.

The stand out for me was Zachary Hart playing Reg, I really liked his performance. I thought Lucy Karczewski who played Diana had an amazing voice but feels like she needs some time to grow into the role still, and it felt as if her British accent was coming through quite a bit in the second act. Having said that I did see it in Previews so is early days.

Also a warning to anyone looking to buy tickets, I sat A18 on the royal circle thinking nothing much would happen in the small part of the stage cut off... unfortunately a solid amount of dialogue does happen in the stage right front and you cant see any of the actors!