But you can understand how apprehensive we were when we went to the preview of the latest Diary of a Wmpy Kid Movie - The Long Haul.
Because it's been some time since the last three movies were released, the original Greg is nearly all grown up, along with Roderick and Rowley. So they have brought in a new cast - including, rather oddly I thought, Alicia Silverstone - yes, how could the goofy teen from Clueless possibly be playing a mother? Well I guess we all have to grow up some time!
And you know what? It didn't matter one jot. This is probably the funniest of all the films - and I mean funny in a laugh-out loud way. This is a book aimed at middle school kids, so don;t expect anything too deep and meaningful - but I challenge anyone not to laugh at Greg becoming more orange than an Oompa Loompa in a hot tub - or the inevitable consequences when Roderick stuffs himself on fried butter on a stick and then goes on a fairground ride.
While the story is far fetched - and if most movies were like real-life they'd be pretty dull - the premise of the family setting off on a road trip together is one most of us can relate to - with sulky kids and parents eager to spend more time together as a family. There is one particularly touching moment, which will resonate with parents of teenagers everywhere, when Mom almost gives up against the competition of mobile phones and laptops.
We are big fans of Wimpy Kid in our house, as the long line of books on the shelf testifies - but even if you are not a huge fan, there's plenty to keep movie-goers of all ages laughing - and it's a great choice for an easy treat over half term.
Watch a clip from the movie