For some of us, a vacation does not always entail hitting the gym for rigorous workouts. If your idea of a vacation is lounging around and relaxing, take it as an opportunity to work on your stretching. If feeling good is the goal of your vacation, I can assure you that 10-15 minutes of stretching will get you well on your way to feeling good.
If your vacation is over and you haven't been stretching, you best start adding it into your routine. Take advantage of the lingering warm weather to lengthen those muscles.