Vacations are supposed to conjure images of tranquil beaches, a good book in hand, and not a care in the world. What we often forget, however, is that the logistics of planning a trip, not to mention the unpredictability of train and air travel, can encroach on those feelings of excitement and joy. Travel can be stressful! But the good news is, cutting out vacation-related stress can be simple, as long as you prepare accordingly.…