A Las Vegas union says Caesars Entertainment has rejected a proposal to have security personnel first enter a hotel guestroom that has hung a “do not disturb” sign for more than 24 hours.

The move comes as part of a trend in the gaming and hotel industries to take steps that might help prevent incidents like the October 1 attack in Las Vegas, in which 58 people were killed and hundreds injured. During his stay at the Mandalay Bay, gunman Stephen Paddock left his “do not disturb” sign on his door for three days before the attack.

Airbnb is taking customers away from Las Vegas hotels — albeit a small slice of them.

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.