lots. Guests have the choice to buy a pass for either standard parking or preferred parking. Preferred parking can be purchased for a higher cost, however, it allows guests to park their vehicle closer to the park entrance. Trams are available to guests at no cost. They provide transportation from the parking lot to the main entrance. Parking areas are also available to those with disabilities. These designated parking lots allow for guests with disabilities to park a shorter distance from the park entrances to minimize any traveling that is necessary. Additionally, guests are given the option of valet parking at an extra cost. Employment When the Magic Kingdom opened in 1971, the site employed about 5,500 "cast members". In 2020, Walt Disney World employs more than 77,000 cast members. The largest single-site employer in the United States, Walt Disney World has more than 3,000 job classifications with a total 2019 payroll of over $3 billion. The resort also sponsors and operates the Walt Disney World College Program, an internship program that offers American college students (CPs) the opportunity to live in Flamingo Crossings Village, a Disney-owned apartment complex, and work at the resort, and thereby provides much of the theme park and resort "front line" cast members. There is also the Walt Disney World International College Program, an internship program that offers international college students (ICPs) from all over the world the same opportunity. In September 2020, the Walt Disney Company began laying off 6,500 Walt Disney World employees. Energy use Walt Disney World requires an estimated of electricity annually, costing the company nearly $100 million in annual energy consumption. In addition to relying primarily on fossil fuels and nuclear energy from the state's power grid, Walt Disney World has two solar energy facilities on property; a Mickey Mouse-shaped solar panel farm near Epcot, and a facility near Disney's Animal Kingdom. The larger facility produces enough solar energy to provide electricity to two of the resort's theme parks. The sites are operated by Duke Energy and the Reedy Creek Improvement District, respectively. The entire Disney Transport bus fleet uses R50 renewable diesel fuel, obtained from used cooking oil and non-consumable food waste from the resort. Corporate culture Walt Disney World's corporate culture uses jargon based on theatrical terminology. For example, park visitors are always "guests", employees are called "cast members", rides are "attractions" or "experiences", cast members costumed as