Join a hotel's loyalty program, even if you're planning only a one-night stay. Many hotel brands hand out extra amenities to members: Omni, Fairmont and Wyndham all give free Internet to members, for instance, and Omni delivers a free breakfast beverage to your room every morning, as well as presses two of your garments at no charge. Also, if the hotel is overbooked or has to give someone a bum room, the last person it will treat badly is someone it perceives as loyal.