Adventures by Disney, an award-winning leader in guided group travel worldwide, has announced three new United States vacations available beginning this summer. Exhilarating, educational and entertaining, these vacations showcase the diverse destinations of Central Florida, Montana, and Washington, D.C. & Philadelphia, offering families unforgettable ways to bond and explore America. Each of these weeklong trips is filled with activities unique to the destinations visited. In Central Florida, families will enjoy unprecedented backstage access and VIP experiences at Walt Disney World…