Edit: This link: https://disneyworld.disney.go.com/dining/epcot/after-hours/ explains the event.
Just a heads up that a yet-to-be-announced Wind Down event looks to be coming to Epcot beginning April 17th. Expected hours are 9:15pm – 11pm at the also yet-to-be-announced lounges. Word is Disney is looking to muster up the Pleasure Island/New Year’s Eve vibe in the World Showcase during Disney Springs construction. And…you know…continue selling alcohol at a 1000% markup without actually having to operate anything but the bars. There is likely no use in calling as nobody on the phone will have any idea what you’re talking about yet.