Answer:
I am one small little piece of paper yet sometimes hold lots of value. I am all you need to get in to big events but will cost you. I am an important part of travel. And if lost you're not coming.
You hear me speak, for I have a hard tongue. But I cannot breathe, for I have not a lung. What am I?
I go in dry and come out wet. The longer I stay in the stronger my surroundings get.
Although I am still, in families I run. I continue to live on in a living one. As one continues to draw breath, I will not rust. However, when one stops drawing breath, I will become mere dust. What am I?
The shorter I am the bigger I am.
All about, but cannot be seen, Can be captured, cannot be held, No throat, but can be heard. Who am I?