Yes, you can bring a vape or e-cigarette on a Royal Caribbean cruise, but their usage is strictly regulated. Vaping is prohibited in all staterooms and on private balconies; if caught, you could face a significant cleaning fee (typically $250) or even removal from the ship. You may only use your vape in designated outdoor smoking areas, which are usually located on one side of the ship and are clearly signposted. Some ships also allow vaping in specific sections of the casino. Crucially, as of 2026, Royal Caribbean warns passengers not to take vapes ashore in Mexico. Under current Mexican law, the import of e-cigarettes is illegal, and tourists caught with them at ports like Cozumel or Costa Maya face fines of up to $12,500 or potential jail time. Therefore, while you can enjoy your vape on the ship, it is safest to leave it in your cabin safe whenever the ship is docked in a Mexican port to avoid severe legal consequences.