Where there were con-goers, there were people suffering heatstroke, hyperventilation, panic attacks, bruises and cuts from being battered with over-zealous costumes, crush injuries from overcrowding, dehydration, and the dozens of other maladies associated with putting too many overexcited people in the one place.
The First Aid stand was outside the actual con floor, so he couldn't even get free entry for his trouble.
(( Side Job, 120 credits earnt ))