How can i convince my parents to let me go to the midnight Premiere of a movie?

i wanted to go to the midnight Premiere of harry potter 7 part 2 with
my friends but my parents said no....and i NEVER get to do anything
and im being serious here. how can i convince them to let me go? there
will be like 4 or 5 of us total and one of my friends dads is coming
with us so its not like we are alone. and its not a school night or
anything.

PLEASE help i want to go SOOOOOO bad.

and i already told them im not going to eat or drink until they let me
go....hope it works lol.
im also 13 if that helps