Set Jetting, Castle Sleepovers, and Alpine Mountain Air: EF Go Ahead Tours Expands European Portfolio of "Weeklong" Itineraries in Austria, Germany and Switzerland

New tours spotlight iconic cultural experiences inspired by "The Sound of Music" in Austria, amazing landscapes in Switzerland, to castle stays in Germany—while offering travelers flexible, affordable ways to explore Europe CAMBRIDGE, Mass., March 25, 2026 /PRNewswire/ -- EF Go Ahead...