Witches VS Patriarchy

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…