Complimentary tickets are free passes given out as a reward, incentive, or gesture of goodwill. While complimentary is a commonly used term, there are several other synonyms that can be used interchangeably, such as free tickets, courtesy passes, gift vouchers or passes, comp tickets, tickets on the house, or guest passes. These synonyms are all commonly used in the entertainment and hospitality industries to offer guests and customers a complimentary experience, whether it's for a show, movie, concert, hotel room, or restaurant meal. Regardless of the term used, complimentary tickets are a great way to show appreciation and gain loyalty from customers and guests alike.