Guernsey provides a solid backdrop for describing the small details of how life was altered by World War II. 
 Though I would consider this "fluffy" in a lot of ways, the characters are strong (especially Juliet) and Guernsey is somehow still able to serve up a cozy slice-of-life read despite the (view spoiler)[they-adopted-a-baby-and-got-married-and-lived-happily-ever-after (hide spoiler)] ending. 
 Favorite Quotes 
 I much prefer whining to counting my blessings. 
 The poor child had never seen so many males in one place in her life. Think of it - a whole generation grown up without dances or teas or flirting. 
 Reading good books ruins you for enjoying bad books. 
 He thinks that if one cares deeply about someone or something new one throws a kind of energy out into the world, and "fruitfulness" is drawn in.