We were there Thursday, Friday and Saturday. We stayed onsite and had EMH each day. So we did DL on Thursday, DCA on Friday and DL again on Saturday. For the first time, we chose to buy non-park-hopper tickets. So we couldn't hop if the park we were in was busy.
We got a TON done during each EMH and immediately after. But on all 3 days, by 11:00 a.m. everything was a long wait and very crowded. In my opinion, if Pooh, Buzz and Monsters are all 25 minute waits, then you know it is crowded.
But once it got too crowded we used fastpasses, enjoyed attractions like Aladdin, Turtle Talk, Tiki Room and Pirates Lair and then left each day by about 1:00.
So yes it was crowded, but with EMH or well-planned rope-drop mornings, you can still do a lot. We did everything we wanted to do and still had time to relax and take it all in.