Costumed family asked to leave Busch Gardens

A costumed family was asked to leave Busch Gardens Tampa because costumes are not allowed in the park.  They say it can confuse people into thinking the patrons were park employees.  I know costumes with masks have not been allowed for some time, but I don’t see why these costumes wouldn’t be allowed.  I’m pretty sure that no one would mistake the young children for employees.