Daughter number two took me to this today. We caught one of the 2D showings.
Since I was prepared by the first two instalments I managed to have fun this time. "Five Armies" picks up right where "Desolation" leaves off and it's a lot of action until the credits, except for the middle bit with Thorin glowering from behind his wall and everyone argues about the gold.
Galadriel's smack-down of Sauron is pretty cool. The portrayal of Dain Ironfoot is also a lot of fun. The giant worms giving the goblins of Gundabad a hidden route of approach to the battle space was fairly weird though. The battle was well done even if it didn't follow the novel and at least Beorn shows up to thrash goblins. The tie in with LOTR was a bit heavy handed. Peter Jackson still got all the important bits to happen though, even including Bilbo returning mid-auction.
So it was silly good fun and not as distressing as the first two.