A woman holding a girl reacts after Israeli airstrikes hit Ridwan neighborhood of Gaza City, Gaza on October 23, 2023. (Photo by Ali Jadallah/Anadolu via 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.

Palestinians fleeing Khan Yunis on the coastal road leading to Rafah further south ride on a donkey-cart with their belongings on January 25, 2024, amid continuing battles between Israel and the Palestinian militant group Hamas. Israel pressed its blistering assault on the Gazan city of Khan Yunis on January 25, with the Palestinian Islamist movement Hamas saying dozens were killed in heavy bombardment and urban combat. (Photo by AFP Photo)

Gabriel of Arsenal celebrates scoring his team's third goal with teammates during the UEFA Champions League 2024/25 League Phase MD5 match between Sporting Clube de Portugal and Arsenal FC at Estadio Jose Alvalade on November 26, 2024 in Lisbon, Portugal. (Photo by Stuart MacFarlane/Arsenal FC via Getty Images)

Lando Norris of Great Britain and McLaren raises his trophy in celebration on the podium during the F1 Grand Prix of Abu Dhabi at Yas Marina Circuit on December 7, 2025 in Abu Dhabi, United Arab Emirates. (Photo by Jayce Illman/Getty Images)

Palestinian children, with empty containers, wait in a line for food, distributed by charity organizations, since Palestinians are unable to obtain basic food supplies due to the embargo imposed by Israeli forces in Rafah, Gaza on February 25, 2024. (Photo by Abed Zagout/Anadolu via Getty Images)

A Palestinian woman flashes a V-sign towards Israeli troops during an army raid in the Tulkarem refugee camp, West Bank, Wednesday, January 17, 2024. An Israeli airstrike killed four Palestinians during a raid in the West Bank. The military says it targeted a group of militants who had opened fire and were throwing explosives at Israeli soldiers in the Tulkarem refugee camp. The Palestinian Health Ministry says four people were killed. (Photo by Nasser Nasser/AP Photo)