It also proves to be another main revenue source for Disney that's quite staggering if you do the math. For example, Disney welcomes more than 51 million visitors a year, and if only a fraction of those visitors drive and park, Walt Disney World could be earning more than $128 million a year in parking fees alone.

While Disney does not publicly break down its "parking revenue" as a solo line item in financial reports, estimates suggest the company earns hundreds of millions of dollars annually from parking alone. At Walt Disney World, standard parking for a car or motorcycle currently costs $30 to $35 per day, while "Preferred" parking can range from $45 to $60 depending on the season. With tens of thousands of vehicles entering the lots across four theme parks every day, the math adds up quickly. For example, if 20,000 cars pay an average of $35 at just one park, that's $700,000 a day. However, Disney has softened this slightly in recent years by restoring free overnight self-parking for guests staying at Disney Resort hotels, a move designed to increase hotel occupancy and overall guest satisfaction after previous backlash.