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.

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)

The Forth Bridge is engulfed by mist on one of the coldest days of the year, on December 12, 2022, in Edinburgh, Scotland. (Photo by Ken Jack/Getty Images)

“The Naval and Military Club is a gentlemen's club in London, England. It was founded in 1862 because the three then existing military clubs in London – the United Service, the Junior United Service and the Army and Navy – were all full. The membership was long restricted to military officers. This is no longer the case, but it still has a predominantly military and ex-military membership”. – Wikipedia

Photo: Members of the prestigious “In and Out Club”, one of the oldest and most exclusive clubs in London, march around St. James's Square during the club's 150th birthday celebration on March 1, 2012 in London, England. Patrons of the private members club, whose official title is the Naval and Military Club, gathered in St. James's Square in Central London before marching with the Band of the Royal Logistics Corps to be greeted by HRH The Duke of Edinburgh, and retiring for lunch inside the club. (Photo by Dan Kitwood/Getty Images)

Lake Baikal is the world's oldest lake, at 25 million years (possibly older), and deepest, averaging 744.4 metres (2,442 ft).

Located in the south of the Russian region of Siberia, between Irkutsk Oblast to the northwest and the Buryat Republic to the southeast, it is the most voluminous freshwater lake in the world, containing roughly 20% of the world's unfrozen surface fresh water.

Lee Kiefer of the USA (L) and Inna Deriglazova of Russia (R) in action during the women's Foil Individual Gold Medal Bout of the Fencing events of the Tokyo 2020 Olympic Games at the Makuhari Messe convention centre in Chiba, Japan, 25 July 2021. (Photo by Kiyoshi Ota/EPA/EFE)

Young women dance a group dance at the Palace Square in St.Petersburg, Russia, Thursday, September 24, 2020. (Photo by Dmitri Lovetsky/AP Photo)

A Togolese policeman, disguised as a terrorist, brandishes his weapon on October 20, 2022 during an anti-terrorism exercise at the Peacekeeping Operations Training Center (CEOMP). Togo's military on Thursday carried out a simulated jihadist attack in the capital Lome on Thursday, practising countering an assault and hostage-taking at a restaurant. Togo and neighbouring West African coastal states like Ghana and Benin are preparing for growing spillover from jihadist conflicts across their northern borders in Niger and Burkina Faso. (Photo by Yanick Folly/AFP Photo)