At least key cards won’t open the manual locks on these:
The door can’t be opened without a card even when “unlocked”, and the manual lock will keep the door closed until someone uses a physical key.
But I guess you can’t know in advance if your hotel has these (though I don’t remember staying in a hotel in the last 5 years that didn’t). Though I’d think a hotel could get into a lot of legal trouble if they just gave out keys to rooms to guests that aren’t listed in the reservation…
At least key cards won’t open the manual locks on these:
The door can’t be opened without a card even when “unlocked”, and the manual lock will keep the door closed until someone uses a physical key.
But I guess you can’t know in advance if your hotel has these (though I don’t remember staying in a hotel in the last 5 years that didn’t). Though I’d think a hotel could get into a lot of legal trouble if they just gave out keys to rooms to guests that aren’t listed in the reservation…