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This dislikable comedy is about dislikable characters who dislike each other. It's a dishonest picture about people agreeing to tell lies in the cause of peace but eventually coming out with uncomfortable truths that somehow lead to a happy, sentimental ending. The bride involved in the eponymous big wedding in fashionable Greenwich, Connecticut is the daughter (Amanda Seyfried) of a xenophobic stockbroker who's facing jail for fraud. The groom is the adopted Colombian son (Ben Barnes) of a priapic, alcoholic sculptor (Robert De Niro) who's left his kooky wife (Diane Keaton) for her best friend (Susan Sarandon). The tone is set by Keaton accidentally stumbling on De Niro talking about cunnilingus and then practising it on Sarandon beside the kitchen sink. Subsequently, the jokes are squeezed from the ragged plot with the grace of an arthritic senior citizen trying to get milk out of a coconut by hand. The oily officiating priest is Father Robin Williams, who's the last straw, or should that be the extreme unction?