If these questions have been answered can i get them copied and pasted. I'm so sorry to sound like a brat and be asking questions and not answering any, i just know nothing of the games

I've been driving myself nuts with making sure i have everything packed, charged, confirmations, purchasing stuff, etc. i'm going CRAZY! Answer these questions for me please?
We are going to use a car so how early should we get to the concert? we have bleacher seats not field. We can't use Disney buses because we are making a second trip just for the concert and won't be going to Disney but instead just the concert.
How likely are you to get an autograph? And last year did they have a specific "break" time in which they'd get out and sign stuff? I have a really important letter i want to give to Miley that i worked hard on and i'd love to quickly hand it to her.
For the actual games itself do you think arriving at 9:20 would be a risk?
UGH! How stressful right before i make a post i have to ask more questions but i blank out once i'm actually posting cause i have a million and one things on my mind!!
EDIT: YES! Another question came to mind... Sarah said she won't have money to attend the parade? The parade costs MONEY?!? Or does she mean she can't afford entering the PARKS to see the parade? Just double checking here... hahahaha! Oh and one more quick thing. Does anyone have the slightest clue on where the route for the parade will be? Okay i'm really embarassed and please don't hit me with hard metal objects (hehe) but i never attended a disney parade.. i have but not in MANY MANY years. So i don't know what time i should be there? Where i should sit in the parade? PLEASE SOMEONE HELP ME BE PREPARED! I'll be horrified to go and find out that i don't know where the parade is or i'm too late