This time we missed the opening stuff too and both days we were there early!?! I don't know if they are still doing the Characters on the Train Opening or not. Last year it was about 15-20 min before the park officially opened.
BUT The key is to be at the rope drop IN the Castle. We got in there because we had a PS. To get in the front gate early, we had to go to the far right turnstyles and tell the CM that we had a PS at a time before the park opens, i.e. 8:45 for a 9:00 opening. They did not ask for the PS number, just the time.
Ok, flame suit on, sorry but I fibbed a bit since our PS was 9:15 but I wanted to be able to get down Mainstreet with the stoller and a dawdling 3 yr old without getting caught in the crowd. I was not sure if I could manage it and didn't want to be late for CRT. There were alot of other people there at the Castle rope drop so I am sure there are many different ways to get in early.