Are masks required for entry?

No

I didn't see anybody wearing masks on the first day of the show Wednesday

It says this one their website: Personal Protective Equipment (PPE): Following U.S. CDC guidelines, exhibitors, sponsors, and attendees that have been vaccinated are not required to wear a facial covering. Exhibitors, sponsors, and attendees not vaccinated will be encouraged to always wear a facial covering over the nose and mouth except when eating or drinking.