I'll admit that they relied too much on Allen (Zach) to make situations awkward, or worse than they already were. His character was a little too plot-driven other than just comedic relief, which is all he really needs to be. It WAS like they imitated the first film completely, but just in different situations. All in all, I left the theater with my chest hurting from laughing so hard.
So disregard the hype, just see it on your own accord. It's worth it.