The Casey Jr. is a water play area across from which aerial carousel-style ride located in Fantasyland at six Disney parks around the world?
Dumbo the Flying Elephant
Title: Portage Park (Chicago)
Passage: Portage Park is a 36 acre park in the Portage Park community area of Chicago, Illinois on the National Register of Historic Places.  The park stretches from Irving Park Road on the south to Berteau Avenue between Central and Long Avenues.  The largest public park on Chicago's Northwest Side, it has many recreational facilities including six tennis courts, two playgrounds, a slab for in-line skating, a bike path, a nature walk, five baseball fields, two combination football/soccer fields and two fieldhouses— one housing a gymnasium and the other a cultural arts building.  The park also has an Olympic-size pool featuring a large deck for sunning, misting sprays, as well as an interactive water play area with slide and diving boards in addition to a smaller heated pool.  Plans are currently underway for the development of a new, 6500 sqft senior center at Portage Park.
Title: Casey Jr. Splash 'n' Soak Station
Passage: The Casey Jr.  Splash 'n' Soak Station is an attraction in the Fantasyland section of Walt Disney World in Bay Lake, Florida.  Casey Jr is the train seen in the film "Dumbo", where Dumbo, his mother, Mrs. Jumbo, and other circus animals travel on to the shows.  This attraction is a water play area across from the Dumbo the Flying Elephant ride and The Barnstormer starring the Great Goofini.  It is designed to look like it has actual animals in the train by having elephant trunks and giraffes that spray out water at young guests.
Title: Dumbo the Flying Elephant
Passage: Dumbo the Flying Elephant is an aerial carousel-style ride located in Fantasyland at six Disney parks around the world.  It is based on the 1941 film, "Dumbo".  The original attraction opened at Disneyland in October 1955, three months after the park opened.  The four other versions of the attraction were opening-day attractions at their respective parks.
Casey Jr. Splash 'n' Soak Station Dumbo the Flying Elephant