From a Muppets roller coaster to Bluey meet-and-greets, there’s a lot coming to the parks.Cinderella Castle in Magic Kingdom Park at Walt Disney World Resort in Florida.Credit: Matt Stroshane/DisneySummer may be around the corner, but Walt Disney World is already heating things up with new, limited-time, and reimagined experiences.The summer is especially a good time for families to visit the parks with the return of Cool KIDS’ SUMMER, running M…