If you went to Walt Disney World on opening day in 1971, it cost you $3.50. Today you'll pay anywhere from $109 to $159 for the same ticket. That's a 191% increase; inflation has only gone up 151% in the same time.
Worlds of Fun also has a waterpark called Oceans of Fun, which is connected to Worlds of Fun and included in the price of admission. Oceans of Fun has many family-friendly and little kid-approved water attractions.
The buildings are designed and decorated as you would find them if you vacation in a European country. There are also a wide variety of Dutch-themed shops at Neli's where you can purchase cheese, dutch fudge and place an order for Tulips in the spring for pick up and planting by fall.