I did the UE this past Friday. They start you out in DL, take you around there for a bit, then you go over to DCA where it ends and you are given your party wristbands, a trick or treat bag, a pin and a sweet treat. From there, they escort you back into DL. Seems like it would have been easier to just start in DCA to begin with instead of walking back and forth.
Also, they no longer use headphones on the Haunted Haunts tour. They have in years past, but now headphones are only used for the Holiday and Walk in Walt's Footsteps tour. Just an FYI in case anyone has a hard time hearing. Our tour group was full, and we really had to huddle in close to hear what our guide was saying. Make sure your wearing deodorant on these hot days!! LOL