I found the criticisms on Frommer's NZ mostly incorrect. At least, I did not have the same experience as the two critics. I consider this book reliable. Actually, certain information in the book closely assembles those on the leaflets found at the tourist information centers. Tourists can find many helpful facilities in NZ and anyone can have a pleasant trip in NZ without a guide book. However, the valuable parts of this book came from the writer. Adrienne is a New Zealander. I trusted the ratings, followed the recommendations, suggested itineraries ... and had a wonderful experience in NZ.