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 bury me when Iām alive and dig me up when Iām dead. What am I?
I can't go left, I can't go right. I am forever stuck in a building over three stories high. What am I?
I cover what's real; hide what is true, but sometimes bring out the courage in you. What am I?
I am bought by the yard but worn by the foot. What am I?
I am free the first time and second time but the third time is going to cost you money.