I agree with you wholeheartedly! With one caveat I suppose. I couldn't tell if the young lesbians were badly drawn, or if the acting was just poor--especially Anderson, who I thought was terrible. It would be a more interesting play (but still, not a terrifically interesting one) if the younger couple were believable--if I genuinely thought they were deeply in love and wanted to spend their lives together.
It is so worth the play just to watch Debra Jo Rupp, though--what a performance! And I was starving for cake the whole time, because, as you said, I'd like to live in that set.