Answer:
I travel the world and I am drunk constantly. Who am I?
One am I, among six others: Largest, smallest, cold, dark and two brothers
What has thousands of ribs and two backbones?
A standard dimension for sandwiches and rulers
Barren location, infertile and dry; my name means "to leave", it's not heard to see why
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.