We typically stay at the DLH, but due to a change in schedule wound up staying out on the Harbour side for a day before moving to the DLH. In our experience, the security lines were night and day. They were awful on the Harbor side. We didn't even arrive at opening. We got into town and hit the park probably around noon, and were in a security line on the Harbor side for well over half an hour. We have never stood in a line that long from the DLH side. I can't recall ever standing in line for over 10 minutes on that side and it is usually less. Now, we have not done DLR in the morning since ROTR has opened, so I don't know how that changes things.