Okay, first off, Passion is what I would call a highly intellectual piece of theater not designed to sell to the average tourist. Grey Gardens I would not. It's a clever show, yes, but in a navel gazing sort of way. The entire first act could be dismissed with only the loss of a few good songs and a gratuitous performance.
The reason Grey Gardens closed is because it is absolutely undramatic. The characters reach no conclusions, the story goes nowhere. What is good about Grey Gardens is that it's such a unique and progressive piece of musical theater. If you care for such things (and I do) then there's a lot to admire about the show. For a casual theatergoer/tourist, I can't imagine why they'd pick this show over quite a number of other shows that have more to offer.
"Hm, should we go see the show with the flying witches or the one with the two bitchy old ladies who complain to one another all night?"
I know Grey Gardens is the trendy latest tragic victim of the dunces who populate Legally Blonde and The Lion King and leave interesting shows to die in the sun--but come on. The reviews were mixed, the show got lots of attention, it will be well remembered. The end.
yr ronin,
joey