In the realm of Cary Grant movies, I can see why this one doesn't get as much play. It's uninspired, with sloppy writing, lackluster performances, and no small amount of idiot-balling. Even Ralph Bellamy's broad portrayal of The Rustic Oil Man From Oklahoma comes off more forced than anything, and he's quickly shooed offstage halfway through the movie and never seen again anyway.
Oh well. They can't all be The Philadelphia Story, I guess!