What is the importance of Pavuvu in the nonfiction book, With the Old Breed, at Peleliu and Okinawa?

Pavuvu is a small island in the Russell Island chain, northwest of Guadalcanal. It was used by the marines as a training and rehabilitation camp prior to the assaults on both Peleliu and Okinawa. Sledge found life on Pavuvu boring and largely unpleasant. A photograph of Bob Hope and officers attending a show on Pavuvu is included in the photographic plates in the text.