I had a friend see it at La Jolla, and read the reviews. She loved the film, but I don't think she liked the stage show quite as much. The reviews were mixed, and most seemed to say it was a bit mediocre; not innovative from other rock-and-roll 50's stage musicals at all.
Perhaps re-tooling before Broadway can make it a bit better, as the storyline of Crybaby itself is quite fun! I probably wouldn't pay to see it, though.
"And all I ask is a tall ship and a star to steer her by" (John Masefield)