Multiple workers at concessions stands told The Baltimore Sun that unless the New York Yankees or Boston Red Sox — the visiting teams for seven of Camden Yards’ eight largest announced crowds this season — are in town or it’s a giveaway night, it’s unlikely they’ll do much business. Workers who handle stands to benefit nonprofit groups said they might bring in one-fourth as much on a regular night as they might have when the attendance was higher while the team was contending from 2012 to 2017.