To spend the least amount of money at Disney World, plan your visit during off-peak seasons to benefit from lower ticket prices and accommodation costs, as well as smaller crowds. Purchase discounted tickets through authorized sellers or multi-day passes for better value. Opt for off-site accommodations with shuttle services to the parks to save on lodging expenses. Bring snacks and refillable water bottles to avoid overpriced food and beverages in the parks, and consider sharing meals or dining at quick-service restaurants to cut down on dining expenses. Set a budget for souvenirs and stick to it, opting for affordable options like pins or postcards, and consider purchasing Disney merchandise from off-site retailers for better deals.