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Walt Disney World swapped out its “Do Not Disturb” signs for “Room Occupied” signs last week at four of its Florida resort properties.

Around dusk on a late November weekday, hundreds of people walked through Mandalay Bay, past empty restaurants just off the casino floor and toward the huge convention center.

MGM’s Mandalay Bay is now stationing security officers at guest elevator banks, and the guards are requiring patrons to produce their room keys before being allowed access.

Mandalay Bay is increasing security as it seeks to reassure guests following the Oct. 1 shooting.

It might be more difficult to sense the fragrances emanating from casinos as you walk the Strip.