I have issues with the hipster doofus peter pan husband with the uptight wife stereotype anyway. Around my house we call that "boring wife syndrome" - when the "cool guy" marries Ursula Uptight and she glowers at everyone and asks to speak with him in the kitchen a lot when they host parties. It just makes you hate both of them - him for his won't-grow-up need for "mommy" and her for being insufferable.
The movie was cute, though, and I liked the end. I even got a little weepy. I'd give it a B+.