Whether your kids are world travelers or just getting ready for their first trip, these 10 tips will save your sanity and keep your kids happy. All at the same time.1. Pack your stuff judiciously, then cut it by half. You think one person’s stuff can fill up a room? Try four people’s stuff. This isn’t Fashion Week in New York — a couple pairs of shorts/dresses should suffice, as most resorts have laundry service.