"So if we make sure that at any time we're either on the main road or sticking to the edges of the district, we should be okay..."
Can I make another Intelligence check to see if Hissra can remember whether he passed any open-air stalls on the way to the cloak shop, and where they were? (I don't think the stalls wouldn't have been selling anything at the time, since I don't think I've ever been in that district during the day, but I thought they might have been left outside with the merchandise safely put away elsewhere. Either way, it seemed worth asking.)