I cannot understand the critics of this film. It clearly has an unbelievable plot and all the characters are caricatures of goodies or baddies, inept adults and triumphant kids - but that is where the humour lies. From start to finish it stands in the old fashioned slap stick and manic situation comedy movie genre. The fact that you can see some of the jokes coming does not stop them being funny at the moment of delivery. There are some superb slap stick movie moments. Mayhem abounds. It is not meant to be taken seriously. It does not pretend to be great cinema. It is not cool or sophisticated comedy. Woody Allen would and could not have made it. It should be seen for what it is, a wonderful, old-fashioned, family comedy which makes us laugh again and again and which can be enjoyed by all ages. I grew up on Jerry Lee Lewis and St. Trinians. I loved it.