Paris Saint-Germain's Italian goalkeeper #01 Gianluigi Donnarumma sustains an injury by Monaco's Ivorian defender #17 Wilfried Singo (L) during the French L1 football match between AS Monaco and Paris Saint-Germain at the Louis II Stadium (Stade Louis II) in the Principality of Monaco on December 18, 2024. (Photo by Valery Hache/AFP Photo)

Performers from “New Baby Junior Dance Crew” take part in a parade on the first day of the Lunar New Year of the Snake, in Hong Kong on January 29, 2025. (Photo by Lam Yik/Reuters)

Elena Reid of USA looks on with bloody face due to a cut during the Women's WIBF Flyweight Championship fight between Regina Halmich and Elena Reid at the Boerderlandhalle on December 3, 2005 in Magdeburg, Germany. (Photo by Christian Fischer/Getty Images)

Second placed Kalex Moto2 Tito Rabat (rear R) of Spain and third placed Kalex Moto2 Alex Rins of Spain spray with champagne during the award ceremony for the Czech Grand Prix in Brno, Czech Republic, August 16, 2015. (Photo by David W. Cerny/Reuters)

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.

Charlotte FC goalkeeper Kristijan Kahlina deflects a shot by Inter Miami forward Leonardo Campana during the second half of an MLS soccer match, Wednesday, October 18, 2023, in Fort Lauderdale, Fla. (Photo by Rebecca Blackwell/AP Photo)

Paragliders fly towards the landing area of the “Acro Show” above Lake Geneva in Villeneuve, Switzerland on Sunday, August 26, 2018. (Photo by Valentin Flauraud/Keystone via AP Photo)

Italy is the latest country to boast a sеx doll brothel amid predictions the market for robot romps is “going to explode” world-wide. “LumiDolls”, which operates robot knocking shops in Barcelona and in Moscow is now opening a bot bonking branch in the Italian city of Turin on September 3, 2018. (Photo by Giulio Lapone/IPA/Rex Features/Shutterstock)