It wasn't bad at all. Wed and Thurs were both great with very short lines. We never waited more than 10 minutes for anything, though there were longer lines available for a couple of attractions.
Fri started picking up, Sat was more crowded and we did very little in the park attraction-wise because of it, but the lines honestly weren't bad -- we just didn't want to wait 30-50 minutes for anything, even our favorites. Most waits were around the 30-40 minute mark max.
This morning started out with 5-10 minute waits until about 11:30, then that was picking up into the 30 minutes range again.
DCA never had that long of a wait for anything. I don't think we saw a wait time of more than 15 minutes for anything but Soarin', and that never got above 35 (even on Saturday)