Well, the show is now a Times Critic's Pick, so I'd think that their critic liked it a bunch. Matthew Murray at Talking' Broadway, who is someone I think tends to be very tough, gave it an absolute rave.
While the target audience at this early stage clearly fits into a well defined demographic, I think that the marketing will eventually jreach out to the more general audience, with a theme similar to the old ad, "You don't have to be Jewish to to love Levy's Jewish rye.". Or something to that effect.
CZJ at opening night party for A Little Night Music, Dec 13, 2009.