The acting (as always) was supreme and everyone was believable. The only slight problem was that Greg's (Zachary Gordon) voice is breaking. Apart from that it was fine. Out of all three movies, this was the funniest and I think everyone should watch it. My favourite part was the Scouts camping trip, but I also liked the end. I won't tell you what happens then, watch it to find out!
I recommend this to 6-12 year olds, both boys and girls.