ok....
in 2004 we did universal for 3 days the second week in august...the crowds were rediculous and lines were over 45 minutes for each ride. We had to buy universal express plus passes because lines were so long.
in 2005 we went the last week in august, stayed at royal pacific and got the unlimited universal express thingy...we never needed it. Lines at universal studios park were never over 15 minutes for everything and Islands of Adventure had minimal waits all day. I remember 2 hours before IOA closed, popeye, dudley, and spiderman had 0 minute waits.
so im guessing 9/1/06 will be just as uncrowded.