I liked all the character moments. The way it appeared to me, all of the actors were really trying to make a good movie.
I liked that they didn't have a fix it button at the end. I liked that the family was finally splitting up. It created a greater sense of closure, and therefore drama than if it had all stayed the same at the end.
I liked the wedding. We've been following those two for 15 years. We deserved to see that wedding.
It was also a very sad movie for me, since it could have easily been so much better. It had the makings of a great film.