I've been reseaching (and researching and researching

) for our trip from June 13th through June 19th. Some things you should be aware of:
1. Some of the LA area schools are out on the 10th, but the majority of them are out the 17th.
2. The blackout dates for the APs are Wednesday through Saturday (if I remember correctly, please double check yourself just to make sure) for the week of the 13th, but also the week of the 7th. Remember that APs are up at the end of the month!
3. Grad Nites! They're June 3, 10, 16, 17, and 24th. It goes from 11:59 to 6am, but I've been told that it could effect park hours and we might be booted earlier then is normal for the park at that time of the year.
Also remember that there is the new World of Color show that is supposed to open in the spring of 2010 so crowds could be like what the PP said, and CRAZY busy with people sitting and waiting...ALL DAY...to save their seats for the show. But, this wouldn't be such an issue during black out times. Hope this has helped!