A young man “painting” the Eiffel Tower. (Photo by Keystone/Getty Images). 9th May 1970

A groom leads his horse in the equine pool after working out on the track, during early morning workouts for the upcoming Derby race in Mumbai January 29, 2015. (Photo by Danish Siddiqui/Reuters)

A Buddhist monk salvages a statue of a Buddhist deity from a monastery around the famous Swayambhunath stupa after it was damaged by Saturday's earthquake in Kathmandu, Nepal, Thursday, April 30, 2015. In mere seconds, Saturday's earthquake devastated a swathe of Nepal. Three of the seven World Heritage sites in the Kathmandu Valley have been severely damaged, including Durbar Square with pagodas and temples dating from the 15th to 18th centuries, according to UNESCO, the United Nations cultural agency. (Photo by Niranjan Shrestha/AP Photo)

A Maasai woman arrives with collected firewoods at a village nearby Selenkay Conservancy, a community-owned conservation area running by a private company, in Amboseli, Kenya, on June 22, 2022. The camp's ten luxurious tents see tourists flocking again, after the shutdown linked to Covid-19. They observe in small groups elephants, giraffes, antelopes or lions on 5,000 hectares, located on the edge of Amboseli National Park, in the south of the country, and have a glimpse of the life of the Masai, the owners of the land. (Photo by Yasuyoshi Chiba/AFP Photo)

A young couple rest on a bench, as a street actor wearing an Angel costume speaks on the phone in Nikolskaya street near the Kremlin in Moscow, Russia, Wednesday, March 31, 2021. (Photo by Alexander Zemlianichenko/AP Photo)

A Palestinian sits among the rubble of buildings destroyed during the Israeli offensive, amid a ceasefire between Israel and Hamas, in Rafah in the southern Gaza Strip on February 4, 2025. (Photo by Hatem Khaled/Reuters)

Finding just the right spot above the clouds at Camp 1 on Ama Dablam, Danuru Sherpa uses his iPhone to catch up with friends and family. Even at 18,500 feet (5,654 meters), climbers here can check their email and other dispatches from the world below. (Photo by Aaron Huey/National Geographic)

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.