It's the men who are routinely spending more, shelling out to party in Ibiza, drink at Oktoberfest in Munich, or go whitewater rafting in Central America, Gallagher said. The latest destination hot spot for the guys is Colombia. "You always hear about millennials wanting experiences over things," she said, "so this is a huge market, not just for millennials, but people getting married that are older that want to travel and almost use this as an excuse to travel with their friends."