10 Ways Walt Disney World Has Changed Over the Years

4. The cost of admission has increased significantly. When Disney World opened in 1971, admission to the park cost $3.50 for adults and only $1 for kids. Today, admission to Magic Kingdom for one day can cost between $109 and $129 for adults and between $103 and $122 for kids, depending on which park you visit, and whether the day you visit is during what Disney has termed value, regular or peak seasons.