A third of Americans don't take their full vacation time. And many people are disappointed with their vacations, because they build up a huge fantasy about how perfect they have to be, since their vacations are so rare.
The hidden problem, I think, is that workers are thinking of vacation as part of work. They are resting so that they can work better. I am all for work. I have as strong a work ethic as the next Presbyterian elder. But I don't live to work. Work is not my life.
Vacations are to reconnect with family and friends. They are best for rebuilding the social ties that work frays. So even if the weather is not cooperative, if the real point of vacation is to spend time together, a gray day will work as well as a sunny one.