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.

Bodies of Palestinians, who lost their lives after Israeli attacks, are brought to Indonesia Hospital in Gaza City, Gaza on May 16, 2025. Palestinians who lost their relatives were saddened. It was reported that more than 100 Palestinians were killed in the Israeli attacks on northern Gaza, which started at midnight and intensified in the morning. (Photo by Abdalhkem Abu Riash/Anadolu via Getty Images)

Palestinians, who were displaced to the south at Israel's order during the war, make their way as they return to their homes in northern Gaza, amid a ceasefire between Israel and Hamas, in Gaza City, on January 29, 2025. (Photo by Dawoud Abu Alkas/Reuters)

A man rides a motorcycle on a flooded street following heavy rains in Sanaa, Yemen on April 22, 2024. (Photo by Khaled Abdullah/Reuters)

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)

Mother Nesrin Mehre, mourns near the body of Muhammad Mehre was killed in an Israeli attack on al-Nasr neighborhood in northwestern Gaza, on September 23, 2025. His body was taken from al-Shifa Hospital for burial. (Photo by Khames Alrefi/Anadolu via Getty Images)

People mourn as they receive the dead bodies of victims of an Israeli strike on March 3, 2024 in Rafah, Gaza. As of Thursday February 29th, more than 30,000 people had been killed in Gaza since the start of the war on Oct. 7, according to the territory's health ministry. Also this week, more details have emerged of a potential new ceasefire deal that could start before Ramadan, pending further negotiations by Israel, Hamas and foreign mediators. (Photo by Ahmad Hasaballah/Getty Images)

A fisherman paddles on a makeshift raft as a child swims behind him in Gaza City's main fishing harbour on September 7, 2024, amid the ongoing war between Israel and the Palestinian militant group Hamas. (Photo by Omar Al-Qattaa/AFP Photo)