I saw this in Seattle, and it really should have opened up off-Broadway. With some clever marketing, this could have been another "Tony & Tina's Wedding" type of show (well, not interactive like that show, but similar in vein, marketing towards a date night type of situation), but the show is too slight to be really big on Broadway, at Broadway prices. It's cute, and mostly harmless, and nothing more, and will probably be evicerated by NY critics.
Memphis (also by the same producing team) was way more ready for Broadway, which is saying a lot!
Xanadu! Can't cry on cue!