Walt Disney World is probably best known for its rides and character meets, but live entertainment plays a huge role in the parks. The Animal Kingdom park offers a Carnivale Dance Party every evening (as far as I can tell) offering live music, dancers, stiltwalkers and more. It is rather centrally located and if you spend any time in Animal Kingdom at night you are likely to stumble upon it at some point. You can join in the dance fun or stand on the side and watch for as long — or briefly — as you prefer.
Animal Kingdom is my favorite WDW park to photograph.