Washington, D.C.—With its largest event of the year, The Hospitality Sales & Marketing Association International (HSMAI) celebrated its 17th annual Affordable Meetings® National program September 6 – 7 at the Washington Convention Center. The organization’s final convention in its annual trio of large scale meeting planner events—which include the HSMAI’s Affordable Meetings® Mid-America that took place in March at Navy Pier in Chicago and HSMAI’s Affordable Meetings® West in June 14-15 at the Long Beach Convention Center in Long Beach, California—the Washington D.C. event attracted an impressive 1,556 qualified meeting planners and 475 exhibiting companies occupying 532 booths.