Epcot
EPCOT sits at the centre of Walt Disney World, split between Future World (with Guardians of the Galaxy: Cosmic Rewind, Test Track, Spaceship Earth, Soarin', and Frozen Ever After) and the World Showcase - eleven pavilions themed around countries including Japan, Germany, France, and the UK. Flower & Garden, Food & Wine and Festival of the Holidays events run through much of the year.
EPCOT's biggest crowd drivers are its festivals rather than just ride popularity. Guardians of the Galaxy: Cosmic Rewind consistently posts the longest wait times in the park. Check live queue times on arrival, and use our crowd calendar to pick a lower-crowd date outside the peak festival weekends - the World Showcase pavilions can take a full afternoon to properly explore.