Why do so many complain?......

About the fact that many characters from 1 and 2 were absent from this movie.

For me, the fact that Oz, Heather, Vicky, Jessica, Matt Stifler, Sherman and Nadia weren't in it actually made a bit better and made it pretty true to life. Before Reunion came out and before I knew about a deleted scene saying he was unable to make it, I assumed Oz drifted apart from the gang like friends do sometimes and only your really close friends stay for the wedding really.

But all the other characters weren't particularly close with Jim or Michelle and there were no rowdy college parties in this movie so there wasn't any reason for them to be involved (Although the Milf guys were ushers for some reason).