Answer:
If you can get this professional's attention you can get where you need to go for a price.
I am neither a guest nor a trespasser in this place. I belong that belongs to me. Where is it?
Never ahead, ever behind, yet flying swiftly pastΝΎ For a child I last forever, for adults I'm gone too fast.
I'm a starchy plant tuber that is one of the most important food crops, cooked and eaten fried, such as french fries.
Who has married hundreds but always been single?
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.