“Drop-in” trips are trending with Millennials who book their travel first and invite friends later.

“Drop-in” trips are trending with Millennials who book their travel first and invite friends later. More young travelers are planning vacations alone, and then putting out an announcement of where they’ll be and when for anyone who might want to join. This way Generation Wanderlust can have the spontaneity of a solo trip, but still (depending on schedules) meet up with friends abroad. The impromptu nature of the trip also puts less pressure on sticking together, leaving room for solo excursions. (PureWow)