A car rests on a fence after it was carried there by floodwater on March 06, 2022 in Tumbulgum, Australia. Residents of southeast Queensland and northern New South Wales are still cleaning up following unprecedented storms and the worst flooding in a decade. (Photo by Dan Peled/Getty Images)

A performer dressed as a zombie performs inside a “Zombie Shinkansen” bullet train bound for Osaka from Tokyo, inspired by the South Korean movie “Train to Busan” ahead of the Halloween season, Japan, on October 19, 2024. (Photo by Kim Kyung-Hoon/Reuters)

Fans of The Script as the band perform on the main stage on the third day of music at the Electric Picnic in Ireland on Sunday, September 3, 2023. (Photo by Alan Betson/The Irish Times)

Revelers enter the cold water during the annual Polar Bear Plunge on New Year's Day, Wednesday, January 1, 2025, in New York. (Photo by Andres Kudacki/AP Photo)

A store staff walks past other staffs dressed up as Stormtrooper and Death Star Gunner (R) from the film “Star Wars” before launching the film's new toys at Loft Variety Store in Shibuya shopping district in Tokyo, September 3, 2015. New “Star Wars” toys and other merchandise were released in stores across Japan just after midnight local time during a global rollout of the popular products. (Photo by Toru Hanai/Reuters)

Several beaches along South Florida's Atlantic coast line were closed after thousands of sharks were seen migrating in the waters. The sharks were migrating from Boca Raton to Jupiter since the beginning of March, marine biologists told NBC Miami. Photo: A spinner shark swims just offshore on Midtown Beach in Palm Beach on Tuesday. (Photo by Jeffrey Langlois/Palm Beach Daily News)

Armed Syrian Turkmen villagers are seen near the northern Syrian village of Yamadi, near the Turkish-Syrian border, Syria, November 24, 2015. Turkey shot down a Russian warplane near the Syrian border on Tuesday saying it had repeatedly violated its air space, one of the most serious publicly acknowledged clashes between a NATO member country and Russia for half a century. (Photo by Reuters/Stringer)

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.