An American white pelican takes flight on the island of Petatan in the municipality of Cojumatlan de Regules, Michoacan state, Mexico on February 23, 2024. The island becomes home to the pelicans during the winter, when they travel from the north of the United States and the south of Canada to the warmer waters of Lake Chapala in Mexico. The birds are a tourist attraction and people gather on the island's boardwalk to feed them and watch them fly. (Photo by Enrique Castro/AFP Photo)

(L-R) American singers Gwen Stefani of No Doubt and Olivia Rodrigo perform at the Coachella Stage during the 2024 Coachella Valley Music and Arts Festival at Empire Polo Club on April 13, 2024 in Indio, California. (Photo by John Shearer/Getty Images for No Doubt)

American actress Anya Taylor-Joy attends the Australian premiere of “Furiosa: A Mad Max Saga” on May 02, 2024 in Sydney, Australia. (Photo by Brendon Thorne/Getty Images)

LADANIVA, representing Armenia, performs “Jako” during the Grand Final of the 2024 Eurovision Song Contest, in Malmo, Sweden, on May 11, 2024. (Photo by Leonhard Foeger/Reuters)

An adult female Masai giraffe rears on its hind legs as it resists efforts by Kenya Wildlife Services (KWS) rangers to guide it into a transportation crate using ropes during an exercise to translocate large herbivores from Kedong Ranch due to land subdivisions and corralling that have disrupted wildlife migratory routes in Naivasha, Nakuru County, on November 16, 2025. Driven by two long ropes held by about twenty rangers, the blindfolded giraffe enters a tall trailer that is to transport it out of its natural habitat in the Rift Valley, which is deteriorating after having been resold. This is the first step in a meticulous relocation operation in the vast Kedong ranch, part of an ancestral corridor between Mount Longonot and Hell's Gate Park, near the iconic Lake Naivasha. (Photo by Tony Karumba/AFP Photo)

A festival-goer sings at Rock in Rio music festival while Brazilian rappers Veigh and Kayblack perform in Rio de Janeiro, Friday, September 13, 2024. (Photo by Hannah-Kathryn Valles/AP Photo)

Shane Baker of Minnesota poses for a photo with adult film actress Rachel Starr at the Pornhub booth at the 2017 AVN Adult Entertainment Expo at the Hard Rock Hotel & Casino on January 18, 2017 in Las Vegas, Nevada. (Photo by Ethan Miller/Getty Images)

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.