From NGS Family History Conference blog:

The National Genealogical Society (NGS) expects as many as 2,000 family historians and professional genealogists will attend its 2018 Family History Conference in Grand Rapids, Michigan. Michigan and other genealogical and historical societies are invited to showcase their organizations at Society Night, an innovative exposition, on Wednesday, 2 May, 5:00 p.m. – 8:00 p.m., in the Center Concourse of the Amway Grand Plaza Hotel.

If your Organization is interested, you can make a reservation online. The cost is $50 for a table; sharing with another group is possible. Read more about this!
http://conference.ngsgenealogy.org/society-night/