Hi – I’m trying to find a book I loved as a child (UK, 1970s).  I believe it was by Enid Blyton – so obviously written before then – but I can’t identify it from a list of her works.  It was about a birthday party, where every child guest has their own story in a chapter. There were also great descriptions of the party food. The final chapter was a story for the reader, because you were also invited to the party.  Does anyone recognise the book from this description?