DONA International Summitt 2020: Connecting Vision to Action. The Sheraton Cavalier Calgary Hotel is thrilled to welcome the DONA 2020 Annual Conference to Calgary, Alberta, Canada! Calgary is a destination like no other: a mix of big-city energy, cheerful western hospitality and wondrous natural beauty. The Sheraton Cavalier Calgary Hotel is conveniently located to YYC - Calgary International Airport. We provide complimentary shuttle service to and from the airport. If you have any questions or require our assistance at any time please email us directly in our reservation department at groupres@sheratoncalgary.ca. We will get back to you as quickly as possible. We look forward to welcoming you to Calgary!