MastLcZ-Act One is unintentionally campy. It's like Die Mommie Die! with the intention of being Ordinary People. In Act Two, the characters are sooo over the top that you laugh at how serious they are about what they are saying. Why play it darker? Darker comedy? That might work. But any other side of darkness, such as playing it more serious, would damage it.
And both you and EnchantedHunter misread my quote. You DO want the audience to laugh and say "Oh these women, can they be for real?". But I meant that if you play the show more seriously than the audience watching these women pour the souls out on the stage saying cheesy writing, will just look dumbfounded and say to themselves, "Are they for real? Are they trying to do SERIOUS theatre?"
Act Two I think balances the campiness that is the Bouvier women perfectly and the dipping beneath the surface. I mean, in the documentary, we hear the women talk about what glorious lives they led and all that. But, the show takes a bit of a serious turn when Edie takes some time alone and looks at some of her old belongings. She doesn't say a word, she just let's the items speak for themselves (this would be during "Around the World"). I found it incredibly powerful because you forget sometimes that Edie had everything going for her and it all just slipped away and now she's in seclusion with her mother. It's shimmering moments like this in GREY GARDENS that you see the wonderful show
within that could have been.
It's funny to watch them because they are both enormously entertaining women to watch, but their situation is quite sad. And if you add the flashbacks into the storyline, you get a better sense of how incredibly sad the entire documentary (and Act Two) truly is.
"Sing the words, Patti!!!!" Stephen Sondheim to Patti LuPone.