What To Bring And Wear To An Emblem3 Meet And Greet?

I'm going to an Emblem3 concert & Meet And Greet on August 8th. I'm totally clueless when it comes to big concerts like this. I've been to indie concerts, and an Olly Murs concert. The Meet & Greet is before the concert, and since I have the VIP package, I get into the venue earlier.
So, at the Meet & Greet, what do I do? I'll be bringing my iPhone & maybe iPod, because the venue doesn't allow professional cameras. What else should I bring? I was thinking of doing a notebook of all their success and stuff. I don't want it to get lost though, because people said that letters get lost.

Okay so my main questions are -
What Do I Bring?
What Do I Wear?
How Can I Get A Good Seat? I'm small, and I don't want to get trampled by other teenagers. How can I get to the front?
How Long Are Meet & Greets?
Sorry for all the questions, I just want to plan ahead, and not mess up.

Hi! That sounds like fun. Are you going with friends? Okay, so firstly don't stress about this. Its supposed to be fun. But, here are there answers.
- What do I bring? Your phone, purse, camera (Unless your phone doesn't have one or isn't very good), Water, A snack to eat, umbrella, Lip gloss and yep, your iPod.
- What do I wear? Depends on the weather to be honest. If it's sunny wear a t-shirt, Bring a jacket. Maybe wear some jeans/Shorts. Wear Hi-tops or converse. Accessorise loads though with cool bracelets and necklaces. If its cold then jeans, Ugg boots, warm woolly jumper and a scarf.
- DON'T Trample to the front! Yes, you'll get squashed easily! So try to stay by the sides. Work your way in, easy does it. Don't charge, just stay back, keep it slow. If you feel hot just make your way out of there sharpish!
- A long time. You have to wait 1-2 hours. But it'll probally be about 1 hour as the band aren't VERY famous. Still love 'em though! Then it's about 30 seconds at the most getting your pic taken with them!

Hope I helped, Have fun!