I went last Sunday and Monday. On both days, lines weren't too bad. Longest line was Splash Mountain for two reasons - #1 it just reopened, #2 - it was very very very hot both days. On Sunday Splash Mountain had a 90 minute line with everything else going at about 35 minutes, and on Monday, Splash Mountain had a 60 minute line, everything else hovered at around 25 min.
Hope that helps
~Tina
P.S. - DCA is still far less crowded than DL. I would advise you to spend the morning and evening in DL, and hop to DCA (if your pass allows) during the hotter more crowded hours between
1-4pm.