Yes, cruise lines employ a rigorous security screening process for all luggage, similar to the protocols found at major international airports. When you arrive at the cruise terminal for embarkation, your checked bags are typically whisked away by porters and put through large X-ray scanners behind the scenes. These scanners are specifically looking for prohibited items such as weapons, illegal drugs, and high-wattage appliances like irons or hot plates that pose a significant fire risk on board. Furthermore, your carry-on bags will go through a physical X-ray machine while you walk through a metal detector or body scanner. Cruise security is also particularly adept at spotting "smuggled" alcohol, often using specialized equipment to detect liquids in non-branded containers. If anything suspicious is found, your bag will be held in a secure area (often called "the naughty room"), and you will be summoned to open it in front of security personnel before the item is confiscated.