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)

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.

Military officers look at an AR-10 sniper rifle at LAAD, the biggest military industry expo in Latin America in Sao Paulo, Brazil April 10, 2018. (Photo by Nacho Doce/Reuters)

Canoeists are framed by the tail of a breaching whale in Antarctica in April 2023. The photographer, from California, writes: “It was probably a once-in-a-lifetime moment”. (Photo by Jiahong Zeng/Solent News)

Judges watch athletes during the women's individual compact NH 5km competition at the Nordic Combined World Cup in Ramsau, Austria, Saturday, December 16, 2023. (Photo by Matthias Schrader/AP Photo)

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)