I bought the event managers bible because I am involved in running a twice yearly event which is growing fast and I needed to get up to speed and see what else I would need to consider as I went further with this. The book offers an excellent and broad overview into the planning and executing of the mechanics of an event - it covers a lot of practical detail, and gives a really complete picture of everything involved. I'll be passing the book to my colleagues on the event (or sending them to the how-to-books website, where you can read all the text of this book).
It's clear that the author has a lot of practical experience in this field and it shows through in a lot of very practical and accessible tips (I now know, know for example, how to work out how many cars can park in a given sized field). In all the practical elements of putting on an event from the event manager's point of view, I felt that this book started at the very top level and went into just enough detail to ensure that I would be confident in knowing what I was doing.
My only criticisms, which are minor are around the editing where there's some sections which are rather longwinded and some sections are repeated.
Note that if you're looking for a book focussing on the less practical elements - the design of the event, programme, marketing etc, then this book isn't strong in those areas, it's much more a practical handbook for ensuring that an event runs smoothly and safely - which is exactly what I was looking for.