Hi Dana! I often say to my husband that Walt Disney World is a bargain compared to our yearly State Fair. I've found that a trip to the fair ends up costing us a lot more than a day in a Disney park, since at the fair we have to pay for admission tickets and then pay for every single ride we take, while at Disney World our admission ticket gets us unlimited attractions. The attractions, shows and entertainment inside the Disney parks are all included in the cost of your park ticket.
You'll, of course, need to pay separately for your food, drinks and souvenirs, and there are some experiences, like a trip to the
Bibbidi Bobbidi Boutique or a special tour, that cost extra, but the vast majority of the entertainment and attractions inside the Disney parks are free with your admission ticket. (They're a lot better than what you'll find at any State Fair too!)
Come visit us again at the Moms Panel if you have more questions! We'd love to help!