Spain's rider Fermin Aldeguer, foreground, leads as Spains rider Manuel Gonzalez Simon falls during Moto2 class race of the MotoGP Malaysian Grand Prix at the Sepang International Circuit in Sepang, Malaysia Sunday, November 12, 2023. (Photo by Vincent Thian/AP Photo)

Xabi Zurutuza of Spain for Red Bull KTM Ajo crashes during Moto3 Free Practice Three as part of the Australian Motorcycle Grand Prix at the Phillip Island Grand Prix Circuit in Phillip Island, Australia, 19 October 2024. (Photo by Joel Carrett/EPA)

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.

A handout photo made available by Limex Images of Pete McLeod of Canada (R) and Kirby Chambliss of the United States flying over the city of Kazan prior to the fifth stage of the Red Bull Air Race World Championship in Russia on August 22, 2018. (Photo by Joerg Mitter/EPA/EFE/Limex Images)

A pilot demonstrates an aircraft manufactured by US-based LIFT Aircraft in front of Osaka Castle in Osaka on March 14, 2023. (Photo by JIJI Press/AFP Phoot)

Roman Cervenka #10 of Czechia celebrates with the trophy and gets a beer thrown on him from his teammates during IHF Ice Hockey World Championship gold medal celebrations with fans at Old Town Square on May 27, 2024 in Prague, Czech Republic. (Photo by RvS.Media/Monika Majer/Getty Images)

Flamengo soccer fans cheer a goal scored by Gabriel against Argentina's River Plate in the Copa Libertadores final match, broadcast on a giant screen at a watch party at the Macarena Stadium, in Rio de Janeiro, Brazil, Saturday, November 23, 2019. The first single-match final will be played in front of more than 65,000 fans at Lima’s Monumental Stadium. The match was originally scheduled for Santiago’s National Stadium, but it was moved because of street protests in Chile. (Photo by Silvia Izquierdo/AP Photo)

United States's Jessie Diggins celebrates winning the cross-country ski, women's Tour de Ski overall standings, in Val di Fiemme, Italy, Sunday, January 7, 2024. (Photo by Alessandro Trovati/AP Photo)