Yes there are line, and many moved slow, but it seems to be improving.
Wednesday nights lines were long. I estimated 1000 people in line for badges when I got in line. It took 1.5 hours before I got my badge. Then I had to stand in line to sign up for events. 1.75 hours later, my events where all closed (OK 1 event, multiple times: Castle Greyhawk Lv. 1).
Thursday the lines for badges and events were much shorter.
The line for the party was 3 blocks long in one direction and a block long in another -- that caused some frustrated feelings when the too lines merged. When I left about an hour after the party started, the line to get in was still a block + long.
See my GenCon report post.
-Swiftbrook