American fashion model Simone Thompson, better known as Slick Woods walks at the Savage x Fenty – September 2018 – New York Fashion Week at Brooklyn Navy Yard on September 12, 2018 in Brooklyn, New York. (Photo by Presley Ann/Patrick McMullan via Getty Images)

God of Wealth arrives at the Lunar New Year celebration at Thean Hou Temple on February 10, 2024, in Kuala Lumpur, Malaysia. Chinese New Year in Malaysia is marked by family gatherings, festive adornments and traditional rituals embodying a spirit of hope and renewal for the year ahead, and aims to bring joy and prosperity to all while fostering a sense of unity and hope for a successful Year of the Dragon. (Photo by Annice Lyn/Getty Images)

An offering of a dried baby llama and fake U.S. burn in honor of Pachamama, or Mother Earth, during a New Year ritual on Turriturrini Mountain on the outskirts of Huarina, Bolivia, Friday, June 21, 2024. Aymara Indigenous communities are celebrating the Andean New Year 5,532 or “Willka Kuti” which translates to “Return of the sun” in Aymara. (Photo by Juan Karita/AP Photo)

Central Palo Seco power station of the Puerto Rico Electric Power Authority (PREPA) is seen behind a cemetery, in San Juan, Puerto Rico on January 22, 2018. (Photo by Alvin Baez/Reuters)

A fuel cell electric vehicle (FCEV) by Nissan is shown at China (Guangzhou) International Automobile Exhibition in Guangzhou, China November 18, 2016. (Photo by Bobby Yip/Reuters)

Fans of The Script as the band perform on the main stage on the third day of music at the Electric Picnic in Ireland on Sunday, September 3, 2023. (Photo by Alan Betson/The Irish Times)

Everyone wants to get something for nothing - whether it's a lucky upgrade that means you can turn left when you get on a plane instead or heading off into the economy seats, or even getting a few extra features thrown in for free when you buy a new car.

As some of the sharpest businesses around, no-one understands this quite as well as casinos and that's why they all have a system that they call comps. It's short for "complimentary offers" and these are special treats specially designed to reward you for your loyalty to the casino in question. They're basically bonuses.

Models pose at the Sachin + Babi Spring 2012 presentation during Mercedes Benz Fashion Week at Pier 59 on September 7, 2011 in New York City. (Photo by Slaven Vlasic/Getty Images)