Always bring more than one swimsuit while traveling. If you're traveling to a tropical location or staying at a beach resort, you must follow this tips. Swimsuits can take a very long time to dry after being rinsed, so it's important to have backup plans to avoid wearing a damp, mildewed bathing suit from the day before. Pack at least two swimsuits, but we advise bringing three or four—after all, it's always great to have options.