What do they take with them from the casino in Lightning Thief?

In "The Lightning Thief," Percy Jackson and his friends visit the Lotus Casino, where they become enchanted and lose track of time, indulging in the casino's pleasures. When they finally escape, they realize they have lost several days and the chance to retrieve Zeus's stolen lightning bolt. They leave the casino with a sense of disorientation and urgency, as they must now hurry to complete their quest before it's too late. Ultimately, they take a newfound awareness of the dangers of temptation and distractions.