Well, when travelling your bedroom is generally also your living room, etc. I would respond that I am not comfortable with them being alone, with the door closed, in the bedroom at home--it indicates they NEED privacy--whereas travelling just means that is the accommodation that makes financial or logistical sense. Hanging out in the bedroom with the door open, or being at the house when I am not there, etc is fine with me. So, I would see it as they do not have to be chaperoned all the time when home or travelling.