On a sticky August morning in New Orleans, Cameron Quincy Todd walked into the Cornstalk Hotel, the 65th property she has visited in six months. She didn’t look ragged after a long journey, and she wasn’t carrying any luggage. Instead, she looked refreshed and toted only a small pink satchel containing a notebook — two major clues to her true identity. She approached the front desk and announced herself: The hotel reviewer with Fodor’s Travel had arrived. No need to be nervous.