What should I say or do? Please help!?

[Katie]

I am going to a Cobra Starship and 3OH!3 concert soon.
I'm most likely meeting 3OH!3 because of the dressing in gold thing.
Well I just wanted to know,if I meet them,what should I say,do,ask them or give them to stand out from just any other fan.
I know to just be myself but I just need advice on what to do or say or give them and not be annoying and stand out.
If you had personal experience with meeting them or if a friend or someone you know has met them please help me. Thank you. All answers that help and actually have to do with my question are greatly appreciated.