The book is filled with sensible and usable advice, and both the weight reduction and weight maintenance diets are used by me on regular basis and score very high on practicality, ease and results. Some of the nutritional values stated in the book are a bit imprecise, but this can be easliy remedied with an up-to-date calorie counter. Another thing I altered is, I excluded the red wine with dinner (as I don't drink at all), eliminated diet coke, and substituted a non-bread option of a similar caloric value where possible (not a fan of bread). I also suggest drinking your tea/coffee with a bit of cinnamon, as that works very well for controlling hunger and stabilising blood sugar (tested many times without fail). In winter, coffee with cinnamon, cloves and a (tiny!) pinch of cayenne pepper is pretty nice too, but not on empty stomach, of course.
As for the cross-training suggestions in the book, I find that running and biking are too harsh to be used on regular basis, so I do yoga instead.
I would highly recommend the book to anyone, dancer or not.