The Big Wedding a cavalcade of stories in one big event.
The good. Lots of things happening. Intricate and fascinating scenario. Well detailed scenes and sets. Funny dialogs and characters. Very slick and polished.
The actors. A star studded cast. Difficult to wreck a production with so much talent. My favorites: Topher Grace and Katherine Heigl. It's nice to see Robert De Niro playing such a cooky role so well.
The bad. Too many closing of loops at the end. However, I don't know what I would have cut. It's nice as is, but the value of the film is just diminished by such neat finish. The husband of Heigl's character is really lame.
The ugly. The lesbian thing was just badly done. A "fetish"? Really? Isn't she more like bisexual? Whatever, it was probably put together by somebody with a conservative view on the subject. Also, the final reveal on the part of the biological mother: totally unnecessary.
The result. A light flick with high value entertainment. There's something for almost everyone. I recommend it.