Americans aren't taking vacation like they used to, and that affects the tourism industry. Unused vacation days are days Americans could be spending on group tours and in destinations. The secret to unlocking your clients' vacation time and boosting your business?

Just when you think you had millennials figured out, here comes Generation Z. Born between the mid-1990s and the early 2000s, members of this generation are entering the workforce as interns and entry-level employees.

Travel habits constantly change, but there's no doubt about it: These trends have been growing the past few years and are front and center on the 2018 travel stage. When marketing your destination, selling tours and building itineraries, consider these trends popular among travelers.

There's no denying the importance of a digital footprint in business: 2017 was the first year advertisers spent more on digital than traditional TV, and the spending is only expected to grow. Customers today are constantly connected to the web, which means they're constantly tracking footprints for their next purchase. (Maybe a group tour?)

Americans aren't taking vacation like they used to.

For decades, Americans took an average of 20.3 days of vacation each year; those numbers fell in 2000, to an average of 16.2. The good news? Vacation is on the upswing, with an average of 16.8 days used in 2016