In traditional hotel setups, when a guest engages the deadbolt from inside the room, it generally prevents the door from being opened from the outside using a regular key or key card. The purpose of the deadbolt is to provide an additional layer of security and privacy for the guest.

However, there are a few things to consider:

1. Emergency Access: For safety reasons, hotels must have a way to access emergency rooms. This could be a master key, a special tool, or another mechanism that allows staff to bypass or disengage the deadbolt. This is essential in emergencies like fires, medical emergencies, or when there’s a strong reason to believe that the guest’s safety is at risk.
2. Security Bars or Latches: Many hotel rooms also have a security bar or latch and a deadbolt. These devices allow the door to be opened slightly (for conversation or to verify identity) while preventing full-room access. Like the deadbolt, there are tools or procedures to bypass these in emergencies, but it’s more challenging than a standard lock.
3. Electronic Deadbolts: Some modern hotel rooms have electronic deadbolts integrated with the room’s main electronic hotel lock system. These can often be unlocked remotely if necessary, but this would typically only be done in emergencies.
4. Privacy and Trust: Hotel guests must trust their privacy will be respected. Hotel staff are trained to knock and announce themselves before entering a room, and they should never bypass a deadbolt without a valid reason. Unauthorized or unnecessary entry into a guest’s room can lead to significant trust issues and potential legal ramifications for the hotel.
5. Do Not Disturb Sign: If you don’t want to be disturbed, hang the “Do Not Disturb” sign on your door. Hotel staff are trained to respect these signs and will avoid knocking or trying to enter your room for housekeeping or other routine tasks. However, after an extended period (usually more than a day) with the signup and no contact from the guest, the hotel may check on the guest’s well-being.
6. Safety: Engaging the deadbolt and any additional security latches or chains will enhance your security while in the room. However, remember that in the rare event of an emergency, hotel staff might need to access rooms, and they will have procedures to do so.

In summary, while hotel staff generally have the means to access rooms even when a deadbolt is engaged, they will only do so under specific circumstances, primarily for safety reasons.