I've had mixed results. Most of the time, they let me in with a season pass. But a few times, I was told it didn't count, and they made me wait. This was the old version of the Platinum pass.
I haven't had any issues with the Platinum Pass.
Jon, is the early entry for the first time use of your pass only? I ask because I have the platinum and bought my little sister a season pass and Saturday is her first day. She really wants to do early entry. Can I get in with her?
[SIZE=12pt]Each ticket purchased online now offers Early Park Admission. If you purchase an Annual Pass, you will have Early Park Admission included each time you visit the parks[/SIZE].