Disappointing expect for hotels (duh) and bars and restaurants. And I would expect selected bars and restaurants at that. From the UPoR:

“Outside of the hospitality industry, there doesn’t appear to be much going on,” said Craig Depken, an economist at UNC Charlotte who has studied the economic impact of political conventions on host cities.

Wells Fargo economist Mark Vitner, who reviewed sales tax receipts at the Observer’s request, said it appears visitor spending was limited to restaurants, food and drink uptown.

“I don’t know if too many people who came for the DNC made the trip to SouthPark,” Vitner said.

All of which is completely unsurprising if one really thinks about — though it’s questionable how much individual think(ing) goes on in this town as opposed to group think.