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.

Cars at a car dealership are seen in the flooded village of Fischerdorf, near Deggendorf June 7, 2013. REUTERS/Michaela Rehle

A man wearing a mask and dressed in a clown costume rides an electric tricycle while carrying a container in the shape of a rubber duck amid heavy smog in Beijing, China, December 29, 2015. (Photo by Jason Lee/Reuters)

Karen Dunn and the nuns from Nun of That Convent at Trailer Park during the final day of Electric Picnic 2023 in Co Laois, Ireland on September 3, 2023. (Photo by Alan Betson/The Irish Times)

An electric scooter for rent covered with snow stands on street after a snowfall at a residential area in Moscow, Russia, 07 April 2025. (Photo by Maxim Shipenkov/EPA/EFE)

Cameroonian model Venance Chiepodeu also known as Miss Cameroon arrives at Spring Studios for the LaQuan Smith's Dinner during fashion week in New York City on September 16, 2020. (Photo by Gabriele Holtermann/Sipa USA)

These brave models show no fear as they pose with bears, tigers and wolves in scenes straight from the pages of a fairy tale. The snaps show the models cuddling up to the deadly animals and even taking naps with the often unpredictable creatures. Here: “Marina with a bear”. Stepan, a 700-pound grizzly bear, was adopted by a Russian couple when he was just 3 months old. (Photo by Olga Barantseva/Caters News Agency)

A miniature model of Chichen Itza in Mexico, part of Gulliver's Gate, a miniature world being recreated in a 49,000-square-foot exhibit space in Times Square, is seen during a preview April 10, 2017 in New York City. (Photo by Timothy A. Clary/AFP Photo)