The Beach Club by Elin Hilderbrand

This takes place in Nantucket at a very fancy beach club and motel.  The lives of those who work there cover the arrogant, self assured and floundering; the expectations of parents, the need to grow up.  For the guests, you have many who are escaping to this little piece of paradise to escape their lives, others to just throw around their money.  Relationships bloom and fade and many hard choices are made.  Hilderbrand did a great job putting all of it together and giving each character something to make you think a little deeper.