Yes, you should get there early if you plan on signing up to get an autograph of a celeb. because fast passes go fast..(pun not intead lol) The crowds are to bad around mid-day...But I'm usually there the third weekend.. But I don't notice the crowds...unless its NEW YEARS, X-mas,, 4th July, Thanksgiving because nothing compares to that...and so when i start to feel like its too crowded I just remember those magical times of the year!
Yet, Again I can go in whenever so...there is no stress for me when theirs crowds.. (I do know how it feels though...I had this feeling when I went to DLR...since we were there for only a week I wanted to try and do everything..but it was hard with the size of the park and the size of the crowds.)