Ries Tripods tells me they plan to have a display table (Ries History?) and a sale table. And, for you large format people, No promises, but Paul Ries's Grandsons have told me they plan to attend the show and meet Spencer and Debbie Hughes, who have owned Ries for the last 2 years or so. (Paul Ries was the inventor of the Ries tripod which was first marketed in 1936.)
This should be an interesting "mini event," especially for Ries tripod owners. I suspect the grandsons (and the Hughes) would like to meet any Ries owners.