I was at DLR this past Thanksgiving, and while Thanksgiving morning wasn't very busy, the afternoon was sheer craziness. I was with my family and my best friends family and someone had a DL app on their Iphone that could list the capacities of each park. Most days we were there, it was in the 90% and above range, more likely in the upper 90s. I don't think it ever reached 100% capacity, but it was certainly very close.