The reaction has been swift. The singer Bryan Adams canceled his concert in Mississippi in protest against what he called an “anti-L.G.B.T.” law, and the actress Sharon Stone decided not to film a movie there. In North Carolina, Bruce Springsteen, Ringo Starr, Pearl Jam and Ani DiFranco have canceled shows in response to a law regulating transgender bathroom access. While the celebrity response is drawing considerable attention, the travel industry in each state is more concerned about lower-profile visitors: the everyday tourists who have already begun canceling trips or planning vacations elsewhere. Both states have been hit by hotel cancellations...