We're just heading out from Disneyland now. We were there Sunday afternoon - Wednesday this week. On Sunday, we entered the park around 8:00 pm. We found moderately heavy crowds that subsided quite a bit after the fireworks. We walked on to the Storybookland boats a little before 11:00 pm, and stayed until just before closing with typical thinning crowds. On Monday and Tuesday, we had moderate crowds (as expected). We stayed for the AP event on Monday and didn't notice a huge increase in crowd levels late in the evening because of it. We had a late dinner offsite with friends on Tuesday, so I am unsure of the evening crowds on Tuesday. Wednesday started off slower than Monday and Tuesday, with lighter crowds in the morning. As the day wore on, we noticed more and more teenagers in the park. They did account for increased crowds, but most rides increased capacity to deal with them and the kiddie rides were largely unaffected in the late afternoon. When we returned to the park after dinner, there were a lot of teenagers there. We rode Space Mountain with our Fastpasses and had an inordinate amount of line-jumping occurring. I also heard a lot of bad language and saw a, um, male birth-control device laying on the ground. Crowds stayed heavy on the teenager-friendly rides. They started blocking the park over an hour early and put up grad night signage (telling other guests to exit the park) early also. Since I knew the time, I ignored the signage and crossed over to use our BTMRR FPs before park closing. The line there was moderate, mich heavier than it usually is at closing. At park closing, they began actively funnelling people out, but Main Street remained open (which I was glad for. I had been scared they might do a hard close). In short, the AP event didn't affect crowds much, but grad night did. Grad night really affected the feel of the park, and not in a good way.