We recently did the extended evening hours at Epcot on a Monday and it was fantastic. We did it the Monday before rundisney weekend started and the crowds during the day were fairly high. I will say this for advice.... leave Harmonious 5 mins early and go straight into Frozen Ever After or Remys if you haven't already done it with an ILL. We rode Remy earlier with an ILL, but didn't want to pay for a Frozen ILL. Everyone is at World Showcase so when Harmonious ends they are headed to Frozen and Remys. So we dis Frozen since we had already done Remys earlier. When we got odd Frozen the line was quite big and we walked on. Then we were ahead of that crowd and went right to Test Track and waited 20mins barely. Then walked on everything else like Soarin, Mission Space, Finding Nemo, Spaceship earth etc etc I kept an eye on Remys on the app as well and there many times it was only at 30mins fyi. Just keep in mind everything else is closed unless you had a dining reservation that was late you're only options will be some food stands/carts, so eat before