Live Entertainment at EPCOT is a year-round thing but make no mistake, one festival is not like the others.
Arts Festival - Keeping with the team of the festival's name, the entertainment for the Festival of the Arts centers on performing arts. 2024 will see cast members from several Broadway Disney shows. These actors and performers will take the American Gardens stage throughout the run of the festival. If you enjoy this type of performance, this is the festival for you.
Next, take your pick because if you have a choice, your best bet is to continually check the concert lineups. Both the Food and Wine Festival and the Flower and Garden Festival have live concerts from some top named bands and musicians.
In 2023, the "Eat to the Beat Concert Series" during the F&W festival featured names like Boyz II Men, Mark Wills, Tiffany, Orianthi and many more. During the Garden Rocks concert series for the F&G festival, Starship, Rick Springfield, Wang Chung, Don Felder from the Eagles, and many more performed for the festival.
Personally, when it comes to the entertainment portion of the festivals, you can't lose if you plan your trip around an act that you enjoy. The 2024 concert series performers have not yet been announced so check back often prior to the booking start.