if u went to any of the harry potter premieres could u help me please???..........

if so could u tell me about the deathly hallows premiere how to get into the crowd of do i need to pay for getting in plese tell me i really wanna go but i ma not sure how to get in could u help me please :)..........could u tell me where to be and when to get up at so i could be there aerly and were to be so i can get autographs????