I can't go to the HP II midnight premiere, what should I do?

I was planning on going to the Harry Potter and the Deathly Hallows II
midnight premiere, but then my friend's parents refuse to wake up in
the middle of night to pick her up... so they expected me to give her
a ride. But my dad said "no way" because she lives very far away, in a
small town and she just always does that, her parents are always too
lazy to drive her anywhere and I used to always give her a ride but
now my dad is tired of it.

Since she's the only person I have to go with, (because the rest are
on vacation) I asked her if we could go earlier the next evening, on
July 15th, 7pm. She said ok, because it's not that late, but it really
bothers me, that all because of her annoying parents I'm missing out
on this HUGE event! I honestly wanted to dress up, it was going to be
my first midnight premiere ever, let alone a Harry Potter one!

What should I do, is there any way both of us can go (at midnight)
that I haven't thought of? (Except for sleeping over, her parents
don't let her -_-)
And if I end up going the later on in the early evening (7pm), can I
still dress up even if it's not the premiere? I don't mean like a
proper costume, but maybe wear a necktie and bring a wand or
something. Or does no one do that unless it's the midnight premiere?
Also, do I have to get there hours before it starts and wait in line
for a good seat or will there not be a huge line waiting since it's
not the premiere?
Do any of you have any encouraging words to look at the bright side of
going afterwards?