We went in 2006 from may 6-13th, it was alright...ive gone during october and early december so to me it was pretty busy compaired to those times... but really the crowds were managable, food courts not overly packd, wait times for busses not to bad...
Now, the downside was there were ALOT of senior classess there.. They were noisy and annoying on the busses and at the hotels..but hard to comeby in the parks....Are you staying at a value? This is one of the reasons we are taking advantage of the deal and will upgrade, hopefully there wont be as many groups at coronado..
We will be returning again in may in 2009 though, but at at a moderate level this time..