“Do Not Disturb” signs are being replaced by “Room Occupied” notices at four Walt Disney World hotels in Florida – allowing maintenance or housekeeping workers to enter rooms daily.

The change took effect last week at the Disney hotels accessible by monorail — the Polynesian Village Resort, Grand Floridian Resort & Spa, Contemporary Resort and the connected Bay Lake Tower.

Hotel staff must knock and identify themselves before entering if the “Room Occupied” sign is out.

Guests are being notified about the new right-to-entry guidelines, the company told the Orlando Sentinel.

If guests take issue with housekeeping or maintenance entering when they are gone, Disney said it will talk to people individually to address concerns.

Disney said it is evaluating whether to update procedures at its other resorts.

The tighter security measures come months after the October 1 shooting in Las Vegas, where a gunman shot from the 32nd floor of the Mandalay Bay casino-hotel tower and killed 58 people, wounding hundreds more.

Disney declined to say whether the shooting prompted the change for its policy but said it made the decision for a variety of factors, including safety, security and the guest experience.