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Die Quelle gibt folgende Informationen zur Methodik:
"To develop this 2020 Global Meetings and Events Forecast, a number of sources were used, including proprietary American Express Meetings & Events data sources, licensed third party data and industry information, as well as interviews with industry leaders. Information and data was gathered from actual and planned meetings activity of American Express Meetings & Events globally. Proprietary surveys of meeting professionals were conducted to gather trends across North America, Europe, Asia Pacific, and Central and South America. A survey of leading hotel and airline suppliers as well as follow-up interviews were also used to inform the findings in this Forecast. Data was collected based on US Dollars across all regions and dollar amounts in tables throughout this Forecast indicate amounts in US Dollars."