a friend of mine flies 767s for UPS ,his normal route is from Anchorage to Shanghai,i don't know how long it takes or anything,but we were talking crew size,he told me that on some routes he takes,there are two crews,what got me was when he said hes so glad he doesn't fly passenger aircraft as the crew relief quarters on the planes he flies for UPS are like castles compared to the model passenger planes .he also told me that two weeks ago he flew to a place in the middle east (he was filling in for another pilot or some such,he had said it was his first time there for UPS) and that he had to carry several thousand dollars in cash for certain airport fees. he added that when hes on his normal scheduled flights,its all either prepaid or transactions are done with credit card.