A swimmer competes in Le Defi Monte-Cristo (Monte Cristo Challenge) swimming event at the Chateau d'If, off the coast of Marseille, southern France, on June 21, 2019. Created in 1999 and inspired by Alexandre Dumas' character of Edmond Dantes, the Monte Cristo Challenge will take place from June 21 to 23, 2019. (Photo by Boris Horvat/AFP Photo)

Fans attend “The Batman” special screening at BFI IMAX Waterloo on February 23, 2022 in London, England. (Photo by Jeff Spicer/Getty Images for Warner Bros.)

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.

Robert Price of TREWGrip LLC demonstrates a TREWGrip handheld rear-type keyboard and air mouse for Apple and Android tablets at the “CES: Unveiled”, media preview for International CES, at the Mandalay Bay Convention Center in Las Vegas on January 5, 2014. (Photo by Robyn Beck/AFP Photo)

A member of Kyrgyzstan's first female hockey team arrives for a training session in the village of Otradnoye, Kyrgyzstan on February 4, 2020. Based in the remote village of Otradnoe, 249 miles (400 kilometres) east of the country's capital Bishkek, the team comprises of around 15 girls from a local school and uses a flooded allotment to train on during the winter months. (Photo by Vladimir Pirogov/Reuters)

Moby – Natural Blues (Reprise Version) ft. Gregory Porter & Amythyst Kiah (Official Music Video). Richard Melville Hall, known professionally as Moby, is an American musician, songwriter, singer, producer, and animal rights activist. He has sold 20 million records worldwide.

Viagra Boys – Ain't Nice. Viagra Boys are a Swedish post-punk band from Stockholm. In 2018, they released their first album, Street Worms. Nils Hansson, a journalist at the newspaper Dagens Nyheter described the band favorably, praising their musical style, as well as their use of black humor and satire, and rated the album a five out of five. In 2019, the band won the Independent Music Companies Association (IMPALA) Album of the Year Award for Street Worms.

A protester is covered in red paint during a demonstration against the government of Thailand's Prime Minister Prayut Chan-O-Cha and in support of the release of political prisoners outside Bangkok Remand Prison in Bangkok on October 13, 2021. (Photo by Lillian Suwanrumpha/AFP Photo)