Hafer's group had expected 5,000 attendees, compared to 4,500 last fall. Hafer says 2,000 individuals had signed up at a point at which normally 8 percent to 10 percent of attendees have registered. The pace has Dynamics Communities reaching out to more Tampa-area hotels. Tampa is not a big conference town and the size of Summit has gotten to the point it caused the city's mayor to contact Hafer. The Summits have been on a strong growth path for the last two years. There were 3,800 attendees in 2014.