Flying to Fiji for Christmas instead of clocking time with their four sets of estranged parents (and rather than volunteering in Burma, their given excuse), the couple is ratted out by network TV when all flights are canceled. We’ve enjoyed their cocky selfishness; just as much, we bask in schadenfreude when they get guilted into making the familial trail of tears. But too soon, Matt Allen, Caleb Wilson, Jon Lucas and Matt Moore’s script pressures us to be with them, not against them. Sympathy sucks the poisonous fun from the comedy’s redemptive last stretch. The early visits have a wicked glimmer—their first visit with Vaughn’s dad (Robert Duvall) is a riot. Jon Favreau and Tim McGraw play Vaughn’s short, powerhouse brothers Denver and Dallas—bottom tier MMA fighters—and without question the best gag in the flick is when Favreau pins Vaughn, dry humps his armpit, then derisively throws him a crumpled dollar bill.
Witherspoon, like most females in comedy, falls victim to more jokes than she gets to crack. Kristen Chenowith has a little more fun playing her fertile, femme fatale sister—a stroke of perfect casting as she’s the only actress shorter, blonder, and squeakier than her co-star. But Witherspoon is allowed a nasty, gleeful smirk when she accidentally knocks a baby’s head into a door. The screenwriters have tied her character’s arc to forcing her to hold a station wagon’s-worth of infants. Having revealed her ignorance of all things Pampers, Witherspoon is then prodded to undergo a maternal awakening so that she’ll pivot and run contrary to Vince’s responsibility-phobic eternal youth and these two stubborn beasts will draw and quarter their relationship. That they Frankenstein-stitch back together their monster perfection is never in doubt, and to the film’s credit, the rift is mended with moderate realism. Such truthiness, however, belongs in a kinder, gentler movie instead of a fanged comedy that voluntarily sacrifices its bite.